bump version to 1.38

update changelog for 1.38
Merge pull request #1645 from deltachat/correct-seen
2026-04-13 11:40:41 +03:00 · 2020-06-20 19:16:07 +02:00 · 2020-06-20 19:09:33 +02:00 · 2020-06-20 19:05:34 +02:00 · 2020-06-20 18:36:09 +02:00 · 2020-06-20 14:37:41 +02:00
50 changed files with 2412 additions and 517 deletions
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,43 @@
 # Changelog 

+## 1.38.0
+
+- fix sorting, esp. for multi-device
+
+
+## 1.37.0
+
+- improve ndn heuristics #1630
+
+- get oauth2 authorizer from provider-db #1641
+
+- removed linebreaks and spaces from generated qr-code #1631
+
+- more fixes #1633 #1635 #1636 #1637
+
+
+## 1.36.0
+
+- parse ndn (network delivery notification) reports
+  and report failed messages as such #1552 #1622 #1630
+
+- read image orientation from exif before recoding #1619
+
+- improve logging #1593 #1598
+
+- improve python and bot bindings #1583 #1609
+
+- improve imap logout #1595
+
+- fix sorting #1600 #1604
+
+- fix qr code generation #1631
+
+- update rustcrypto releases #1603
+
+- refactorings #1617
+
+
 ## 1.35.0

 - enable strict-tls from a new provider-db setting #1587
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -11,9 +11,9 @@ dependencies = [

 [[package]]
 name = "adler32"
-version = "1.0.4"
+version = "1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d2e7343e7fc9de883d1b0341e0b13970f764c14101234857d2ddafa1cb1cac2"
+checksum = "567b077b825e468cc974f0020d4082ee6e03132512f207ef1a02fd5d00d1f32d"

 [[package]]
 name = "aead"
@@ -187,7 +187,7 @@ checksum = "2a397614997df8e3a8b81ff8d882c0fdc100568d3162fadbd1b1410f95c40277"
 dependencies = [
 "async-native-tls",
 "async-std",
- "base64 0.12.1",
+ "base64 0.12.2",
 "byte-pool",
 "chrono",
 "futures 0.3.5",
@@ -215,17 +215,17 @@ dependencies = [

 [[package]]
 name = "async-smtp"
-version = "0.3.1"
+version = "0.3.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "81598a96675097ba5df18eec536a0c1d669244aeb4170f2dfa5ef12e1b2ee4b1"
+checksum = "a9720181a7d56bf3b4d0cfdcb6353df975125996bdd2958b4e639c8317fcaa68"
 dependencies = [
 "async-native-tls",
 "async-std",
 "async-trait",
- "base64 0.12.1",
+ "base64 0.12.2",
 "bufstream",
 "fast_chemail",
- "hostname",
+ "hostname 0.1.5",
 "log",
 "nom 5.1.2",
 "pin-project",
@@ -261,6 +261,18 @@ dependencies = [
 "wasm-bindgen-futures",
 ]

+[[package]]
+name = "async-std-resolver"
+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d113439234775ae3e43d4e7589c5cc64fa3565996ae82dfe26b4ed78c02165be"
+dependencies = [
+ "async-std",
+ "async-trait",
+ "futures 0.3.5",
+ "trust-dns-resolver",
+]
+
 [[package]]
 name = "async-task"
 version = "3.0.0"
@@ -303,13 +315,14 @@ checksum = "f8aac770f1885fd7e387acedd76065302551364496e46b3dd00860b2f8359b9d"

 [[package]]
 name = "backtrace"
-version = "0.3.48"
+version = "0.3.49"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0df2f85c8a2abbe3b7d7e748052fdd9b76a0458fdeb16ad4223f5eca78c7c130"
+checksum = "05100821de9e028f12ae3d189176b41ee198341eb8f369956407fea2f5cc666c"
 dependencies = [
 "addr2line",
 "cfg-if",
 "libc",
+ "miniz_oxide",
 "object",
 "rustc-demangle",
 ]
@@ -337,9 +350,9 @@ checksum = "b41b7ea54a0c9d92199de89e20e58d49f02f8e699814ef3fdf266f6f748d15c7"

 [[package]]
 name = "base64"
-version = "0.12.1"
+version = "0.12.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "53d1ccbaf7d9ec9537465a97bf19edc1a4e158ecb49fc16178202238c569cc42"
+checksum = "e223af0dc48c96d4f8342ec01a4974f139df863896b316681efd36742f22cc67"

 [[package]]
 name = "bit-set"
@@ -633,7 +646,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "ca761767cf3fa9068cc893ec8c247a22d0fd0535848e65640c0548bd1f8bbb36"
 dependencies = [
 "aes-gcm",
- "base64 0.12.1",
+ "base64 0.12.2",
 "hkdf",
 "hmac",
 "percent-encoding",
@@ -801,7 +814,7 @@ dependencies = [

 [[package]]
 name = "deltachat"
-version = "1.35.0"
+version = "1.38.0"
 dependencies = [
 "ansi_term 0.12.1",
 "anyhow",
@@ -809,9 +822,10 @@ dependencies = [
 "async-native-tls",
 "async-smtp",
 "async-std",
+ "async-std-resolver",
 "async-trait",
 "backtrace",
- "base64 0.12.1",
+ "base64 0.12.2",
 "bitflags",
 "byteorder",
 "charset",
@@ -826,6 +840,7 @@ dependencies = [
 "image-meta",
 "indexmap",
 "itertools",
+ "kamadak-exif",
 "lazy_static",
 "lettre_email",
 "libc",
@@ -871,7 +886,7 @@ dependencies = [

 [[package]]
 name = "deltachat_ffi"
-version = "1.35.0"
+version = "1.38.0"
 dependencies = [
 "anyhow",
 "async-std",
@@ -1092,6 +1107,18 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b5320ae4c3782150d900b79807611a59a99fc9a1d61d686faafc24b93fc8d7ca"

+[[package]]
+name = "enum-as-inner"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "bc4bfcfacb61d231109d1d55202c1f33263319668b168843e02ad4652725ec9c"
+dependencies = [
+ "heck",
+ "proc-macro2",
+ "quote",
+ "syn",
+]
+
 [[package]]
 name = "env_logger"
 version = "0.7.1"
@@ -1388,9 +1415,9 @@ dependencies = [

 [[package]]
 name = "hermit-abi"
-version = "0.1.13"
+version = "0.1.14"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "91780f809e750b0a89f5544be56617ff6b1227ee485bcb06ebe10cdf89bd3b71"
+checksum = "b9586eedd4ce6b3c498bc3b4dd92fc9f11166aa908a914071953768066c67909"
 dependencies = [
 "libc",
 ]
@@ -1431,6 +1458,17 @@ dependencies = [
 "winutil",
 ]

+[[package]]
+name = "hostname"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3c731c3e10504cc8ed35cfe2f1db4c9274c3d35fa486e3b31df46f068ef3e867"
+dependencies = [
+ "libc",
+ "match_cfg",
+ "winapi",
+]
+
 [[package]]
 name = "http-client"
 version = "3.0.0"
@@ -1568,15 +1606,6 @@ dependencies = [
 "byteorder",
 ]

-[[package]]
-name = "inflate"
-version = "0.4.5"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1cdb29978cc5797bd8dcc8e5bf7de604891df2a8dc576973d71a281e916db2ff"
-dependencies = [
- "adler32",
-]
-
 [[package]]
 name = "iovec"
 version = "0.1.4"
@@ -1586,6 +1615,18 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "ipconfig"
+version = "0.2.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "f7e2f18aece9709094573a9f24f483c4f65caa4298e2f7ae1b71cc65d853fad7"
+dependencies = [
+ "socket2",
+ "widestring",
+ "winapi",
+ "winreg",
+]
+
 [[package]]
 name = "itertools"
 version = "0.8.2"
@@ -1619,6 +1660,15 @@ dependencies = [
 "wasm-bindgen",
 ]

+[[package]]
+name = "kamadak-exif"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6a5e66d5b5469321038611f7f0e845a48989e4fd54987b6e5bb4c8ae3adbace7"
+dependencies = [
+ "mutate_once",
+]
+
 [[package]]
 name = "keccak"
 version = "0.1.0"
@@ -1753,6 +1803,12 @@ dependencies = [
 "quoted_printable",
 ]

+[[package]]
+name = "match_cfg"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ffbee8634e0d45d258acb448e7eaab3fce7a0a467395d4d9f228e3c1f01fb2e4"
+
 [[package]]
 name = "matches"
 version = "0.1.8"
@@ -1816,6 +1872,12 @@ dependencies = [
 "adler32",
 ]

+[[package]]
+name = "mutate_once"
+version = "0.1.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "16cf681a23b4d0a43fc35024c176437f9dcd818db34e0f42ab456a0ee5ad497b"
+
 [[package]]
 name = "native-tls"
 version = "0.2.4"
@@ -1962,9 +2024,9 @@ dependencies = [

 [[package]]
 name = "object"
-version = "0.19.0"
+version = "0.20.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "9cbca9424c482ee628fa549d9c812e2cd22f1180b9222c9200fdfa6eb31aecb2"
+checksum = "1ab52be62400ca80aa00285d25253d7f7c437b7375c4de678f5405d3afe82ca5"

 [[package]]
 name = "once_cell"
@@ -2078,7 +2140,7 @@ version = "0.8.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "59698ea79df9bf77104aefd39cc3ec990cb9693fb59c3b0a70ddf2646fdffb4b"
 dependencies = [
- "base64 0.12.1",
+ "base64 0.12.2",
 "once_cell",
 "regex",
 ]
@@ -2096,7 +2158,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "26d3fd4e0b2b7a8195b22e196a947c9ceb0d0f722d060e38e0641f48f56e195b"
 dependencies = [
 "aes 0.4.0",
- "base64 0.12.1",
+ "base64 0.12.2",
 "bitfield",
 "block-modes",
 "block-padding 0.2.0",
@@ -2139,18 +2201,18 @@ dependencies = [

 [[package]]
 name = "pin-project"
-version = "0.4.20"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "e75373ff9037d112bb19bc61333a06a159eaeb217660dcfbea7d88e1db823919"
+checksum = "12e3a6cdbfe94a5e4572812a0201f8c0ed98c1c452c7b8563ce2276988ef9c17"
 dependencies = [
 "pin-project-internal",
 ]

 [[package]]
 name = "pin-project-internal"
-version = "0.4.20"
+version = "0.4.22"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "10b4b44893d3c370407a1d6a5cfde7c41ae0478e31c516c85f67eb3adc51be6d"
+checksum = "6a0ffd45cf79d88737d7cc85bfd5d2894bee1139b356e616fe85dc389c61aaf7"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2189,14 +2251,14 @@ checksum = "05da548ad6865900e60eaba7f589cc0783590a92e940c26953ff81ddbab2d677"

 [[package]]
 name = "png"
-version = "0.16.4"
+version = "0.16.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "12faa637ed9ae3d3c881332e54b5ae2dba81cda9fc4bbce0faa1ba53abcead50"
+checksum = "34ccdd66f6fe4b2433b07e4728e9a013e43233120427046e93ceb709c3a439bf"
 dependencies = [
 "bitflags",
 "crc32fast",
 "deflate",
- "inflate",
+ "miniz_oxide",
 ]

 [[package]]
@@ -2245,9 +2307,9 @@ checksum = "7e0456befd48169b9f13ef0f0ad46d492cf9d2dbb918bcf38e01eed4ce3ec5e4"

 [[package]]
 name = "proc-macro-nested"
-version = "0.1.5"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0afe1bd463b9e9ed51d0e0f0b50b6b146aec855c56fd182bb242388710a9b6de"
+checksum = "eba180dafb9038b050a4c280019bbedf9f2467b61e5d892dcad585bb57aadc5a"

 [[package]]
 name = "proc-macro2"
@@ -2463,9 +2525,9 @@ checksum = "26412eb97c6b088a6997e05f69403a802a92d520de2f8e63c2b65f9e0f47c4e8"

 [[package]]
 name = "remove_dir_all"
-version = "0.5.2"
+version = "0.5.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4a83fa3702a688b9359eccba92d153ac33fd2e8462f9e0e3fdf155239ea7792e"
+checksum = "3acd125665422973a33ac9d3dd2df85edad0f4ae9b00dafb1a05e43a9f5ef8e7"
 dependencies = [
 "winapi",
 ]
@@ -2491,6 +2553,16 @@ dependencies = [
 "syn",
 ]

+[[package]]
+name = "resolv-conf"
+version = "0.6.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "11834e137f3b14e309437a8276714eed3a80d1ef894869e510f2c0c0b98b9f4a"
+dependencies = [
+ "hostname 0.3.1",
+ "quick-error",
+]
+
 [[package]]
 name = "ripemd160"
 version = "0.9.0"
@@ -2705,18 +2777,18 @@ checksum = "f638d531eccd6e23b980caf34876660d38e265409d8e99b397ab71eb3612fad0"

 [[package]]
 name = "serde"
-version = "1.0.111"
+version = "1.0.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c9124df5b40cbd380080b2cc6ab894c040a3070d995f5c9dc77e18c34a8ae37d"
+checksum = "736aac72d1eafe8e5962d1d1c3d99b0df526015ba40915cb3c49d042e92ec243"
 dependencies = [
 "serde_derive",
 ]

 [[package]]
 name = "serde_derive"
-version = "1.0.111"
+version = "1.0.112"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3f2c3ac8e6ca1e9c80b8be1023940162bf81ae3cffbb1809474152f2ce1eb250"
+checksum = "bf0343ce212ac0d3d6afd9391ac8e9c9efe06b533c8d33f660f6390cc4093f57"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -2842,9 +2914,9 @@ checksum = "c7cb5678e1615754284ec264d9bb5b4c27d2018577fd90ac0ceb578591ed5ee4"

 [[package]]
 name = "smol"
-version = "0.1.11"
+version = "0.1.12"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "845f5e7db6b614a8f4f59e565c3035f0fab2f71c9537ff0119eddb60d866cae3"
+checksum = "afcf8beb4aa23cc616e3351e49585153b462637c8fec929163b54d88e522b3b0"
 dependencies = [
 "async-task",
 "crossbeam-deque",
@@ -3082,18 +3154,18 @@ dependencies = [

 [[package]]
 name = "thiserror"
-version = "1.0.19"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "b13f926965ad00595dd129fa12823b04bbf866e9085ab0a5f2b05b850fbfc344"
+checksum = "7dfdd070ccd8ccb78f4ad66bf1982dc37f620ef696c6b5028fe2ed83dd3d0d08"
 dependencies = [
 "thiserror-impl",
 ]

 [[package]]
 name = "thiserror-impl"
-version = "1.0.19"
+version = "1.0.20"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "893582086c2f98cde18f906265a65b5030a074b1046c674ae898be6519a7f479"
+checksum = "bd80fc12f73063ac132ac92aceea36734f04a1d93c1240c6944e23a3b8841793"
 dependencies = [
 "proc-macro2",
 "quote",
@@ -3177,6 +3249,44 @@ dependencies = [
 "serde",
 ]

+[[package]]
+name = "trust-dns-proto"
+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdd7061ba6f4d4d9721afedffbfd403f20f39a4301fee1b70d6fcd09cca69f28"
+dependencies = [
+ "async-trait",
+ "backtrace",
+ "enum-as-inner",
+ "futures 0.3.5",
+ "idna",
+ "lazy_static",
+ "log",
+ "rand 0.7.3",
+ "smallvec",
+ "thiserror",
+ "url",
+]
+
+[[package]]
+name = "trust-dns-resolver"
+version = "0.19.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0f23cdfdc3d8300b3c50c9e84302d3bd6d860fb9529af84ace6cf9665f181b77"
+dependencies = [
+ "backtrace",
+ "cfg-if",
+ "futures 0.3.5",
+ "ipconfig",
+ "lazy_static",
+ "log",
+ "lru-cache",
+ "resolv-conf",
+ "smallvec",
+ "thiserror",
+ "trust-dns-proto",
+]
+
 [[package]]
 name = "try_from"
 version = "0.3.2"
@@ -3429,6 +3539,12 @@ dependencies = [
 "cc",
 ]

+[[package]]
+name = "widestring"
+version = "0.4.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a763e303c0e0f23b0da40888724762e802a8ffefbc22de4127ef42493c2ea68c"
+
 [[package]]
 name = "winapi"
 version = "0.3.8"
@@ -3460,6 +3576,15 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

+[[package]]
+name = "winreg"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b2986deb581c4fe11b621998a5e53361efe6b48a151178d0cd9eeffa4dc6acc9"
+dependencies = [
+ "winapi",
+]
+
 [[package]]
 name = "winutil"
 version = "0.1.1"
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,12 +1,12 @@
 [package]
 name = "deltachat"
-version = "1.35.0"
+version = "1.38.0"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
 license = "MPL-2.0"

 [profile.release]
-# lto = true
+lto = true

 [dependencies]
 deltachat_derive = { path = "./deltachat_derive" }
@@ -33,6 +33,7 @@ serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 chrono = "0.4.6"
 indexmap = "1.3.0"
+kamadak-exif = "0.5"
 lazy_static = "1.4.0"
 regex = "1.1.6"
 rusqlite = { version = "0.23", features = ["bundled"] }
@@ -58,6 +59,7 @@ thiserror = "1.0.14"
 anyhow = "1.0.28"
 async-trait = "0.1.31"
 url = "2.1.1"
+async-std-resolver = "0.19.5"

 pretty_env_logger = { version = "0.4.0", optional = true }
 log = {version = "0.4.8", optional = true }
--- a/deltachat-ffi/Cargo.toml
+++ b/deltachat-ffi/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "deltachat_ffi"
-version = "1.35.0"
+version = "1.38.0"
 description = "Deltachat FFI"
 authors = ["Delta Chat Developers (ML) <delta@codespeak.net>"]
 edition = "2018"
--- a/deltachat-ffi/deltachat.h
+++ b/deltachat-ffi/deltachat.h
@@ -307,9 +307,9 @@ char*           dc_get_blobdir               (const dc_context_t* context);
 *                    DC_MEDIA_QUALITY_WORSE (1)
 *                    allow worse images/videos/voice quality to gain smaller sizes,
 *                    suitable for providers or areas known to have a bad connection.
- *                    In contrast to other options, the implementation of this option is currently up to the UIs;
- *                    this may change in future, however,
- *                    having the option in the core allows provider-specific-defaults already today.
+ *                    The library uses the `media_quality` setting to use different defaults
+ *                    for recoding images sent with type DC_MSG_IMAGE.
+ *                    If needed, recoding other file types is up to the UI.
 *
 * If you want to retrieve a value, use dc_get_config().
 *
@@ -528,9 +528,20 @@ int             dc_is_io_running(const dc_context_t* context);
 void            dc_stop_io(dc_context_t* context);

 /**
- * This function can be called whenever there is a hint
- * that the network is available again.
- * The library will try to send pending messages out.
+ * This function should be called when there is a hint
+ * that the network is available again,
+ * eg. as a response to system event reporting network availability.
+ * The library will try to send pending messages out immediately.
+ *
+ * Moreover, to have a reliable state
+ * when the app comes to foreground with network available,
+ * it may be reasonable to call the function also at that moment.
+ *
+ * It is okay to call the function unconditionally when there is
+ * network available, however, calling the function
+ * _without_ having network may interfere with the backoff algorithm
+ * and will led to let the jobs fail faster, with fewer retries
+ * and may avoid messages being sent out.
 *
 * @memberof dc_context_t
 * @param context The context as created by dc_context_new().
@@ -754,6 +765,15 @@ uint32_t        dc_prepare_msg               (dc_context_t* context, uint32_t ch
 * dc_msg_unref(msg);
 * ~~~
 *
+ * If you send images with the DC_MSG_IMAGE type,
+ * they will be recoded to a reasonable size before sending, if possible
+ * (cmp the dc_set_config()-option `media_quality`).
+ * If that fails, is not possible, or the image is already small enough, the image is sent as original.
+ * If you want images to be always sent as the original file, use the DC_MSG_FILE type.
+ *
+ * Videos and other file types are currently not recoded by the library,
+ * with dc_prepare_msg(), however, you can do that from the UI.
+ *
 * @memberof dc_context_t
 * @param context The context object as returned from dc_context_new().
 * @param chat_id Chat ID to send the message to.
@@ -2782,6 +2802,9 @@ int             dc_msg_get_viewtype           (const dc_msg_t* msg);
 *   If a sent message changes to this state, you'll receive the event #DC_EVENT_MSG_DELIVERED.
 * - DC_STATE_OUT_MDN_RCVD (28) - Outgoing message read by the recipient (two checkmarks; this requires goodwill on the receiver's side)
 *   If a sent message changes to this state, you'll receive the event #DC_EVENT_MSG_READ.
+ *   Also messages already read by some recipients
+ *   may get into the state DC_STATE_OUT_FAILED at a later point,
+ *   eg. when in a group, delivery fails for some recipients.
 *
 * If you just want to check if a message is sent or not, please use dc_msg_is_sent() which regards all states accordingly.
 *
@@ -4117,8 +4140,9 @@ void dc_event_unref(dc_event_t* event);


 /**
- * A single message could not be sent. State changed from DC_STATE_OUT_PENDING or DC_STATE_OUT_DELIVERED to
- * DC_STATE_OUT_FAILED, see dc_msg_get_state().
+ * A single message could not be sent.
+ * State changed from DC_STATE_OUT_PENDING, DC_STATE_OUT_DELIVERED or DC_STATE_OUT_MDN_RCVD
+ * to DC_STATE_OUT_FAILED, see dc_msg_get_state().
 *
 * @param data1 (int) chat_id
 * @param data2 (int) msg_id
@@ -4428,7 +4452,9 @@ void dc_event_unref(dc_event_t* event);
 #define DC_STR_WELCOME_MESSAGE            71
 #define DC_STR_UNKNOWN_SENDER_FOR_CHAT    72
 #define DC_STR_SUBJECT_FOR_NEW_CONTACT    73
-#define DC_STR_COUNT                      73
+#define DC_STR_FAILED_SENDING_TO          74
+
+#define DC_STR_COUNT                      74

 /*
 * @}
--- a/deltachat-ffi/src/lib.rs
+++ b/deltachat-ffi/src/lib.rs
@@ -285,7 +285,7 @@ pub unsafe extern "C" fn dc_start_io(context: *mut dc_context_t) {
    }
    let ctx = &*context;

-    block_on({ ctx.start_io() })
+    block_on(ctx.start_io())
 }

 #[no_mangle]
@@ -295,7 +295,7 @@ pub unsafe extern "C" fn dc_is_io_running(context: *mut dc_context_t) -> libc::c
    }
    let ctx = &*context;

-    block_on({ ctx.is_io_running() }) as libc::c_int
+    block_on(ctx.is_io_running()) as libc::c_int
 }

 #[no_mangle]
@@ -1829,7 +1829,11 @@ pub unsafe extern "C" fn dc_send_locations_to_chat(
    }
    let ctx = &*context;

-    block_on({ location::send_locations_to_chat(&ctx, ChatId::new(chat_id), seconds as i64) });
+    block_on(location::send_locations_to_chat(
+        &ctx,
+        ChatId::new(chat_id),
+        seconds as i64,
+    ));
 }

 #[no_mangle]
--- a/examples/repl/cmdline.rs
+++ b/examples/repl/cmdline.rs
@@ -488,6 +488,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
        }
        "listchats" | "listarchived" | "chats" => {
            let listflags = if arg0 == "listarchived" { 0x01 } else { 0 };
+            let time_start = std::time::SystemTime::now();
            let chatlist = Chatlist::try_load(
                &context,
                listflags,
@@ -495,6 +496,9 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                None,
            )
            .await?;
+            let time_needed = std::time::SystemTime::now()
+                .duration_since(time_start)
+                .unwrap_or_default();

            let cnt = chatlist.len();
            if cnt > 0 {
@@ -553,6 +557,7 @@ pub async fn cmdline(context: Context, line: &str, chat_id: &mut ChatId) -> Resu
                println!("Location streaming enabled.");
            }
            println!("{} chats", cnt);
+            println!("{:?} to create this list", time_needed);
        }
        "chat" => {
            if sel_chat.is_none() && arg1.is_empty() {
--- a/python/src/deltachat/direct_imap.py
+++ b/python/src/deltachat/direct_imap.py
@@ -187,7 +187,9 @@ class DirectImap:
        """ (blocking) wait for next idle message from server. """
        assert self._idling
        self.account.log("imap-direct: calling idle_check")
-        res = self.conn.idle_check()
+        res = self.conn.idle_check(timeout=30)
+        if len(res) == 0:
+            raise TimeoutError
        if terminate:
            self.idle_done()
        return res
--- a/python/tests/test_account.py
+++ b/python/tests/test_account.py
@@ -850,6 +850,7 @@ class TestOnlineAccount:

        lp.sec("mark messages as seen on ac2, wait for changes on ac1")
        ac2.direct_imap.idle_start()
+        ac1.direct_imap.idle_start()
        ac2.mark_seen_messages([msg2, msg4])
        ac2.direct_imap.idle_check(terminate=True)
        lp.step("1")
@@ -858,6 +859,8 @@ class TestOnlineAccount:
            assert ev.data1 > const.DC_CHAT_ID_LAST_SPECIAL
            assert ev.data2 > const.DC_MSG_ID_LAST_SPECIAL
        lp.step("2")
+        ac1.direct_imap.idle_wait_for_seen()  # Check that ac1 marks the read receipt as read
+
        assert msg1.is_out_mdn_received()
        assert msg3.is_out_mdn_received()

--- a/src/blob.rs
+++ b/src/blob.rs
@@ -14,6 +14,7 @@ use thiserror::Error;
 use crate::config::Config;
 use crate::constants::*;
 use crate::context::Context;
+use crate::error::Error;
 use crate::events::Event;
 use crate::message;

@@ -408,7 +409,13 @@ impl<'a> BlobObject<'a> {
            return Ok(());
        }

-        let img = img.thumbnail(img_wh, img_wh);
+        let mut img = img.thumbnail(img_wh, img_wh);
+        match self.get_exif_orientation(context) {
+            Ok(90) => img = img.rotate90(),
+            Ok(180) => img = img.rotate180(),
+            Ok(270) => img = img.rotate270(),
+            _ => {}
+        }

        img.save(&blob_abs).map_err(|err| BlobError::WriteFailure {
            blobdir: context.get_blobdir().to_path_buf(),
@@ -418,6 +425,24 @@ impl<'a> BlobObject<'a> {

        Ok(())
    }
+
+    pub fn get_exif_orientation(&self, context: &Context) -> Result<i32, Error> {
+        let file = std::fs::File::open(self.to_abs_path())?;
+        let mut bufreader = std::io::BufReader::new(&file);
+        let exifreader = exif::Reader::new();
+        let exif = exifreader.read_from_container(&mut bufreader)?;
+        if let Some(orientation) = exif.get_field(exif::Tag::Orientation, exif::In::PRIMARY) {
+            // possible orientation values are described at http://sylvana.net/jpegcrop/exif_orientation.html
+            // we only use rotation, in practise, flipping is not used.
+            match orientation.value.get_uint(0) {
+                Some(3) => return Ok(180),
+                Some(6) => return Ok(90),
+                Some(8) => return Ok(270),
+                other => warn!(context, "exif orientation value ignored: {:?}", other),
+            }
+        }
+        Ok(0)
+    }
 }

 impl<'a> fmt::Display for BlobObject<'a> {
@@ -472,7 +497,7 @@ mod tests {

    #[async_std::test]
    async fn test_create() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let blob = BlobObject::create(&t.ctx, "foo", b"hello").await.unwrap();
        let fname = t.ctx.get_blobdir().join("foo");
        let data = fs::read(fname).await.unwrap();
@@ -483,7 +508,7 @@ mod tests {

    #[async_std::test]
    async fn test_lowercase_ext() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let blob = BlobObject::create(&t.ctx, "foo.TXT", b"hello")
            .await
            .unwrap();
@@ -492,7 +517,7 @@ mod tests {

    #[async_std::test]
    async fn test_as_file_name() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let blob = BlobObject::create(&t.ctx, "foo.txt", b"hello")
            .await
            .unwrap();
@@ -501,7 +526,7 @@ mod tests {

    #[async_std::test]
    async fn test_as_rel_path() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let blob = BlobObject::create(&t.ctx, "foo.txt", b"hello")
            .await
            .unwrap();
@@ -510,7 +535,7 @@ mod tests {

    #[async_std::test]
    async fn test_suffix() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let blob = BlobObject::create(&t.ctx, "foo.txt", b"hello")
            .await
            .unwrap();
@@ -521,7 +546,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_dup() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        BlobObject::create(&t.ctx, "foo.txt", b"hello")
            .await
            .unwrap();
@@ -545,7 +570,7 @@ mod tests {

    #[async_std::test]
    async fn test_double_ext_preserved() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        BlobObject::create(&t.ctx, "foo.tar.gz", b"hello")
            .await
            .unwrap();
@@ -570,7 +595,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_long_names() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let s = "1".repeat(150);
        let blob = BlobObject::create(&t.ctx, &s, b"data").await.unwrap();
        let blobname = blob.as_name().split('/').last().unwrap();
@@ -579,7 +604,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_and_copy() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let src = t.dir.path().join("src");
        fs::write(&src, b"boo").await.unwrap();
        let blob = BlobObject::create_and_copy(&t.ctx, &src).await.unwrap();
@@ -595,7 +620,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_from_path() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        let src_ext = t.dir.path().join("external");
        fs::write(&src_ext, b"boo").await.unwrap();
@@ -613,7 +638,7 @@ mod tests {
    }
    #[async_std::test]
    async fn test_create_from_name_long() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let src_ext = t.dir.path().join("autocrypt-setup-message-4137848473.html");
        fs::write(&src_ext, b"boo").await.unwrap();
        let blob = BlobObject::new_from_path(&t.ctx, &src_ext).await.unwrap();
--- a/src/chat.rs
+++ b/src/chat.rs
@@ -424,7 +424,7 @@ impl ChatId {
    async fn get_parent_mime_headers(self, context: &Context) -> Option<(String, String, String)> {
        let collect =
            |row: &rusqlite::Row| Ok((row.get(0)?, row.get(1)?, row.get(2)?, row.get(3)?));
-        let (packed, rfc724_mid, mime_in_reply_to, mime_references): (
+        let (rfc724_mid, mime_in_reply_to, mime_references, error): (
            String,
            String,
            String,
@@ -432,15 +432,14 @@ impl ChatId {
        ) = self
            .parent_query(
                context,
-                "param, rfc724_mid, mime_in_reply_to, mime_references",
+                "rfc724_mid, mime_in_reply_to, mime_references, error",
                collect,
            )
            .await
            .ok()
            .flatten()?;

-        let param = packed.parse::<Params>().ok()?;
-        if param.exists(Param::Error) {
+        if !error.is_empty() {
            // Do not reply to error messages.
            //
            // An error message could be a group chat message that we failed to decrypt and
@@ -454,12 +453,13 @@ impl ChatId {
    }

    async fn parent_is_encrypted(self, context: &Context) -> Result<bool, Error> {
-        let collect = |row: &rusqlite::Row| Ok(row.get(0)?);
-        let packed: Option<String> = self.parent_query(context, "param", collect).await?;
+        let collect = |row: &rusqlite::Row| Ok((row.get(0)?, row.get(1)?));
+        let res: Option<(String, String)> =
+            self.parent_query(context, "param, error", collect).await?;

-        if let Some(ref packed) = packed {
+        if let Some((ref packed, ref error)) = res {
            let param = packed.parse::<Params>()?;
-            Ok(!param.exists(Param::Error) && param.exists(Param::GuaranteeE2ee))
+            Ok(error.is_empty() && param.exists(Param::GuaranteeE2ee))
        } else {
            // No messages
            Ok(false)
@@ -1464,7 +1464,7 @@ pub async fn send_msg(
                }
            }
            msg.param.remove(Param::PrepForwards);
-            msg.save_param_to_disk(context).await;
+            msg.update_param(context).await;
        }
        return send_msg_inner(context, chat_id, msg).await;
    }
@@ -2596,7 +2596,7 @@ pub async fn forward_msgs(
                        .set(Param::PrepForwards, new_msg_id.to_u32().to_string());
                }

-                msg.save_param_to_disk(context).await;
+                msg.update_param(context).await;
                msg.param = save_param;
            } else {
                msg.state = MessageState::OutPending;
@@ -2784,7 +2784,7 @@ pub(crate) async fn delete_and_reset_all_device_msgs(context: &Context) -> Resul
 pub(crate) async fn add_info_msg(context: &Context, chat_id: ChatId, text: impl AsRef<str>) {
    let rfc724_mid = dc_create_outgoing_rfc724_mid(None, "@device");

-    if context.sql.execute(
+    if let Err(e) = context.sql.execute(
        "INSERT INTO msgs (chat_id,from_id,to_id, timestamp,type,state, txt,rfc724_mid) VALUES (?,?,?, ?,?,?, ?,?);",
        paramsv![
            chat_id,
@@ -2796,7 +2796,8 @@ pub(crate) async fn add_info_msg(context: &Context, chat_id: ChatId, text: impl
            text.as_ref().to_string(),
            rfc724_mid,
        ]
-    ).await.is_err() {
+    ).await {
+        warn!(context, "Could not add info msg: {}", e);
        return;
    }

@@ -2820,7 +2821,7 @@ mod tests {

    #[async_std::test]
    async fn test_chat_info() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let bob = Contact::create(&t.ctx, "bob", "bob@example.com")
            .await
            .unwrap();
@@ -2854,7 +2855,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_draft_no_draft() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_by_contact_id(&t.ctx, DC_CONTACT_ID_SELF)
            .await
            .unwrap();
@@ -2864,7 +2865,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_draft_special_chat_id() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let draft = ChatId::new(DC_CHAT_ID_LAST_SPECIAL)
            .get_draft(&t.ctx)
            .await
@@ -2876,14 +2877,14 @@ mod tests {
    async fn test_get_draft_no_chat() {
        // This is a weird case, maybe this should be an error but we
        // do not get this info from the database currently.
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let draft = ChatId::new(42).get_draft(&t.ctx).await.unwrap();
        assert!(draft.is_none());
    }

    #[async_std::test]
    async fn test_get_draft() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_by_contact_id(&t.ctx, DC_CONTACT_ID_SELF)
            .await
            .unwrap();
@@ -2899,7 +2900,7 @@ mod tests {
    #[async_std::test]
    async fn test_add_contact_to_chat_ex_add_self() {
        // Adding self to a contact should succeed, even though it's pointless.
-        let t = test_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "foo")
            .await
            .unwrap();
@@ -2911,7 +2912,7 @@ mod tests {

    #[async_std::test]
    async fn test_self_talk() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_by_contact_id(&t.ctx, DC_CONTACT_ID_SELF)
            .await
            .unwrap();
@@ -2932,7 +2933,7 @@ mod tests {

    #[async_std::test]
    async fn test_deaddrop_chat() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat = Chat::load_from_db(&t.ctx, ChatId::new(DC_CHAT_ID_DEADDROP))
            .await
            .unwrap();
@@ -2947,7 +2948,7 @@ mod tests {

    #[async_std::test]
    async fn test_add_device_msg_unlabelled() {
-        let t = test_context().await;
+        let t = TestContext::new().await;

        // add two device-messages
        let mut msg1 = Message::new(Viewtype::Text);
@@ -2982,7 +2983,7 @@ mod tests {

    #[async_std::test]
    async fn test_add_device_msg_labelled() {
-        let t = test_context().await;
+        let t = TestContext::new().await;

        // add two device-messages with the same label (second attempt is not added)
        let mut msg1 = Message::new(Viewtype::Text);
@@ -3036,7 +3037,7 @@ mod tests {

    #[async_std::test]
    async fn test_add_device_msg_label_only() {
-        let t = test_context().await;
+        let t = TestContext::new().await;
        let res = add_device_msg(&t.ctx, Some(""), None).await;
        assert!(res.is_err());
        let res = add_device_msg(&t.ctx, Some("some-label"), None).await;
@@ -3056,7 +3057,7 @@ mod tests {

    #[async_std::test]
    async fn test_was_device_msg_ever_added() {
-        let t = test_context().await;
+        let t = TestContext::new().await;
        add_device_msg(&t.ctx, Some("some-label"), None).await.ok();
        assert!(was_device_msg_ever_added(&t.ctx, "some-label")
            .await
@@ -3080,7 +3081,7 @@ mod tests {

    #[async_std::test]
    async fn test_delete_device_chat() {
-        let t = test_context().await;
+        let t = TestContext::new().await;

        let mut msg = Message::new(Viewtype::Text);
        msg.text = Some("message text".to_string());
@@ -3100,7 +3101,7 @@ mod tests {

    #[async_std::test]
    async fn test_device_chat_cannot_sent() {
-        let t = test_context().await;
+        let t = TestContext::new().await;
        t.ctx.update_device_chats().await.unwrap();
        let (device_chat_id, _) =
            create_or_lookup_by_contact_id(&t.ctx, DC_CONTACT_ID_DEVICE, Blocked::Not)
@@ -3120,7 +3121,7 @@ mod tests {

    #[async_std::test]
    async fn test_delete_and_reset_all_device_msgs() {
-        let t = test_context().await;
+        let t = TestContext::new().await;
        let mut msg = Message::new(Viewtype::Text);
        msg.text = Some("message text".to_string());
        let msg_id1 = add_device_msg(&t.ctx, Some("some-label"), Some(&mut msg))
@@ -3157,7 +3158,7 @@ mod tests {
    #[async_std::test]
    async fn test_archive() {
        // create two chats
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let mut msg = Message::new(Viewtype::Text);
        msg.text = Some("foo".to_string());
        let msg_id = add_device_msg(&t.ctx, None, Some(&mut msg)).await.unwrap();
@@ -3271,7 +3272,7 @@ mod tests {

    #[async_std::test]
    async fn test_pinned() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        // create 3 chats, wait 1 second in between to get a reliable order (we order by time)
        let mut msg = Message::new(Viewtype::Text);
@@ -3330,7 +3331,7 @@ mod tests {

    #[async_std::test]
    async fn test_set_chat_name() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "foo")
            .await
            .unwrap();
@@ -3354,7 +3355,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_same_chat_twice() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let contact1 = Contact::create(&context.ctx, "bob", "bob@mail.de")
            .await
            .unwrap();
@@ -3373,7 +3374,7 @@ mod tests {

    #[async_std::test]
    async fn test_shall_attach_selfavatar() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "foo")
            .await
            .unwrap();
@@ -3397,7 +3398,7 @@ mod tests {

    #[async_std::test]
    async fn test_set_mute_duration() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "foo")
            .await
            .unwrap();
@@ -3465,7 +3466,7 @@ mod tests {

    #[async_std::test]
    async fn test_parent_is_encrypted() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "foo")
            .await
            .unwrap();
--- a/src/chatlist.rs
+++ b/src/chatlist.rs
@@ -147,11 +147,12 @@ impl Chatlist {
                 FROM chats c
                 LEFT JOIN msgs m
                        ON c.id=m.chat_id
-                       AND m.timestamp=(
-                               SELECT MAX(timestamp)
+                       AND m.id=(
+                               SELECT id
                                 FROM msgs
                                WHERE chat_id=c.id
-                                  AND (hidden=0 OR state=?1))
+                                  AND (hidden=0 OR state=?1)
+                                  ORDER BY timestamp DESC, id DESC LIMIT 1)
                 WHERE c.id>9
                   AND c.blocked=0
                   AND c.id IN(SELECT chat_id FROM chats_contacts WHERE contact_id=?2)
@@ -173,11 +174,12 @@ impl Chatlist {
                 FROM chats c
                 LEFT JOIN msgs m
                        ON c.id=m.chat_id
-                       AND m.timestamp=(
-                               SELECT MAX(timestamp)
+                       AND m.id=(
+                               SELECT id
                                 FROM msgs
                                WHERE chat_id=c.id
-                                  AND (hidden=0 OR state=?))
+                                  AND (hidden=0 OR state=?)
+                                  ORDER BY timestamp DESC, id DESC LIMIT 1)
                 WHERE c.id>9
                   AND c.blocked=0
                   AND c.archived=1
@@ -206,11 +208,12 @@ impl Chatlist {
                 FROM chats c
                 LEFT JOIN msgs m
                        ON c.id=m.chat_id
-                       AND m.timestamp=(
-                               SELECT MAX(timestamp)
+                       AND m.id=(
+                               SELECT id
                                 FROM msgs
                                WHERE chat_id=c.id
-                                  AND (hidden=0 OR state=?1))
+                                  AND (hidden=0 OR state=?1)
+                                  ORDER BY timestamp DESC, id DESC LIMIT 1)
                 WHERE c.id>9 AND c.id!=?2
                   AND c.blocked=0
                   AND c.name LIKE ?3
@@ -236,11 +239,12 @@ impl Chatlist {
                 FROM chats c
                 LEFT JOIN msgs m
                        ON c.id=m.chat_id
-                       AND m.timestamp=(
-                               SELECT MAX(timestamp)
+                       AND m.id=(
+                               SELECT id
                                 FROM msgs
                                WHERE chat_id=c.id
-                                  AND (hidden=0 OR state=?1))
+                                  AND (hidden=0 OR state=?1)
+                                  ORDER BY timestamp DESC, id DESC LIMIT 1)
                 WHERE c.id>9 AND c.id!=?2
                   AND c.blocked=0
                   AND NOT c.archived=?3
@@ -424,7 +428,7 @@ mod tests {

    #[async_std::test]
    async fn test_try_load() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id1 = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "a chat")
            .await
            .unwrap();
@@ -472,7 +476,7 @@ mod tests {

    #[async_std::test]
    async fn test_sort_self_talk_up_on_forward() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx.update_device_chats().await.unwrap();
        create_group_chat(&t.ctx, VerifiedStatus::Unverified, "a chat")
            .await
@@ -497,7 +501,7 @@ mod tests {

    #[async_std::test]
    async fn test_search_special_chat_names() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx.update_device_chats().await.unwrap();

        let chats = Chatlist::try_load(&t.ctx, 0, Some("t-1234-s"), None)
@@ -530,7 +534,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_summary_unwrap() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let chat_id1 = create_group_chat(&t.ctx, VerifiedStatus::Unverified, "a chat")
            .await
            .unwrap();
--- a/src/config.rs
+++ b/src/config.rs
@@ -286,7 +286,7 @@ mod tests {

    #[async_std::test]
    async fn test_selfavatar_outside_blobdir() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let avatar_src = t.dir.path().join("avatar.jpg");
        let avatar_bytes = include_bytes!("../test-data/image/avatar1000x1000.jpg");
        File::create(&avatar_src)
@@ -315,7 +315,7 @@ mod tests {

    #[async_std::test]
    async fn test_selfavatar_in_blobdir() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let avatar_src = t.ctx.get_blobdir().join("avatar.png");
        let avatar_bytes = include_bytes!("../test-data/image/avatar900x900.png");
        File::create(&avatar_src)
@@ -341,7 +341,7 @@ mod tests {

    #[async_std::test]
    async fn test_selfavatar_copy_without_recode() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let avatar_src = t.dir.path().join("avatar.png");
        let avatar_bytes = include_bytes!("../test-data/image/avatar64x64.png");
        File::create(&avatar_src)
@@ -365,7 +365,7 @@ mod tests {

    #[async_std::test]
    async fn test_media_quality_config_option() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let media_quality = t.ctx.get_config_int(Config::MediaQuality).await;
        assert_eq!(media_quality, 0);
        let media_quality = constants::MediaQuality::from_i32(media_quality).unwrap_or_default();
--- a/src/configure/mod.rs
+++ b/src/configure/mod.rs
@@ -1,5 +1,7 @@
 //! Email accounts autoconfiguration process module

+#![forbid(clippy::indexing_slicing)]
+
 mod auto_mozilla;
 mod auto_outlook;
 mod read_url;
@@ -621,7 +623,7 @@ mod tests {

    #[async_std::test]
    async fn test_no_panic_on_bad_credentials() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_config(Config::Addr, Some("probably@unexistant.addr"))
            .await
@@ -635,7 +637,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_offline_autoconfig() {
-        let context = dummy_context().await.ctx;
+        let context = TestContext::new().await.ctx;

        let mut params = LoginParam::new();
        params.addr = "someone123@example.org".to_string();
--- a/src/contact.rs
+++ b/src/contact.rs
@@ -1,5 +1,7 @@
 //! Contacts module

+#![forbid(clippy::indexing_slicing)]
+
 use async_std::path::PathBuf;
 use deltachat_derive::*;
 use itertools::Itertools;
@@ -1029,10 +1031,10 @@ pub fn addr_normalize(addr: &str) -> &str {
    let norm = addr.trim();

    if norm.starts_with("mailto:") {
-        return &norm[7..];
+        norm.get(7..).unwrap_or(norm)
+    } else {
+        norm
    }
-
-    norm
 }

 fn sanitize_name_and_addr(name: impl AsRef<str>, addr: impl AsRef<str>) -> (String, String) {
@@ -1042,11 +1044,15 @@ fn sanitize_name_and_addr(name: impl AsRef<str>, addr: impl AsRef<str>) -> (Stri
    if let Some(captures) = ADDR_WITH_NAME_REGEX.captures(addr.as_ref()) {
        (
            if name.as_ref().is_empty() {
-                normalize_name(&captures[1])
+                captures
+                    .get(1)
+                    .map_or("".to_string(), |m| normalize_name(m.as_str()))
            } else {
                name.as_ref().to_string()
            },
-            captures[2].to_string(),
+            captures
+                .get(2)
+                .map_or("".to_string(), |m| m.as_str().to_string()),
        )
    } else {
        (name.as_ref().to_string(), addr.as_ref().to_string())
@@ -1113,38 +1119,21 @@ pub(crate) async fn set_profile_image(
 /// Normalize a name.
 ///
 /// - Remove quotes (come from some bad MUA implementations)
-/// - Convert names as "Petersen, Björn" to "Björn Petersen"
 /// - Trims the resulting string
 ///
 /// Typically, this function is not needed as it is called implicitly by `Contact::add_address_book`.
 pub fn normalize_name(full_name: impl AsRef<str>) -> String {
-    let mut full_name = full_name.as_ref().trim();
+    let full_name = full_name.as_ref().trim();
    if full_name.is_empty() {
        return full_name.into();
    }

-    let len = full_name.len();
-    if len > 1 {
-        let firstchar = full_name.as_bytes()[0];
-        let lastchar = full_name.as_bytes()[len - 1];
-        if firstchar == b'\'' && lastchar == b'\''
-            || firstchar == b'\"' && lastchar == b'\"'
-            || firstchar == b'<' && lastchar == b'>'
-        {
-            full_name = &full_name[1..len - 1];
-        }
+    match full_name.as_bytes() {
+        [b'\'', .., b'\''] | [b'\"', .., b'\"'] | [b'<', .., b'>'] => full_name
+            .get(1..full_name.len() - 1)
+            .map_or("".to_string(), |s| s.trim().into()),
+        _ => full_name.to_string(),
    }
-
-    if let Some(p1) = full_name.find(',') {
-        let (last_name, first_name) = full_name.split_at(p1);
-
-        let last_name = last_name.trim();
-        let first_name = (&first_name[1..]).trim();
-
-        return format!("{} {}", first_name, last_name);
-    }
-
-    full_name.trim().into()
 }

 fn cat_fingerprint(
@@ -1235,7 +1224,6 @@ mod tests {

    #[test]
    fn test_normalize_name() {
-        assert_eq!(&normalize_name("Doe, John"), "John Doe");
        assert_eq!(&normalize_name(" hello world   "), "hello world");
        assert_eq!(&normalize_name("<"), "<");
        assert_eq!(&normalize_name(">"), ">");
@@ -1270,7 +1258,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_contacts() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let contacts = Contact::get_all(&context.ctx, 0, Some("some2"))
            .await
            .unwrap();
@@ -1294,10 +1282,10 @@ mod tests {

    #[async_std::test]
    async fn test_is_self_addr() -> Result<()> {
-        let t = test_context().await;
+        let t = TestContext::new().await;
        assert!(t.ctx.is_self_addr("me@me.org").await.is_err());

-        let addr = configure_alice_keypair(&t.ctx).await;
+        let addr = t.configure_alice().await;
        assert_eq!(t.ctx.is_self_addr("me@me.org").await?, false);
        assert_eq!(t.ctx.is_self_addr(&addr).await?, true);

@@ -1307,7 +1295,7 @@ mod tests {
    #[async_std::test]
    async fn test_add_or_lookup() {
        // add some contacts, this also tests add_address_book()
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let book = concat!(
            "  Name one  \n one@eins.org \n",
            "Name two\ntwo@deux.net\n",
@@ -1400,10 +1388,10 @@ mod tests {
        assert!(contact_id > DC_CONTACT_ID_LAST_SPECIAL);
        assert_eq!(sth_modified, Modifier::None);
        let contact = Contact::load_from_db(&t.ctx, contact_id).await.unwrap();
-        assert_eq!(contact.get_name(), "Alice Wonderland");
-        assert_eq!(contact.get_display_name(), "Alice Wonderland");
+        assert_eq!(contact.get_name(), "Wonderland, Alice");
+        assert_eq!(contact.get_display_name(), "Wonderland, Alice");
        assert_eq!(contact.get_addr(), "alice@w.de");
-        assert_eq!(contact.get_name_n_addr(), "Alice Wonderland (alice@w.de)");
+        assert_eq!(contact.get_name_n_addr(), "Wonderland, Alice (alice@w.de)");

        // check SELF
        let contact = Contact::load_from_db(&t.ctx, DC_CONTACT_ID_SELF)
@@ -1420,7 +1408,7 @@ mod tests {

    #[async_std::test]
    async fn test_remote_authnames() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        // incoming mail `From: bob1 <bob@example.org>` - this should init authname and name
        let (contact_id, sth_modified) = Contact::add_or_lookup(
@@ -1483,7 +1471,7 @@ mod tests {

    #[async_std::test]
    async fn test_remote_authnames_create_empty() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        // manually create "claire@example.org" without a given name
        let contact_id = Contact::create(&t.ctx, "", "claire@example.org")
@@ -1530,7 +1518,7 @@ mod tests {

    #[async_std::test]
    async fn test_remote_authnames_edit_empty() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        // manually create "dave@example.org"
        let contact_id = Contact::create(&t.ctx, "dave1", "dave@example.org")
@@ -1574,7 +1562,7 @@ mod tests {

    #[async_std::test]
    async fn test_name_in_address() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        let contact_id = Contact::create(&t.ctx, "", "<dave@example.org>")
            .await
@@ -1587,7 +1575,7 @@ mod tests {
            .await
            .unwrap();
        let contact = Contact::load_from_db(&t.ctx, contact_id).await.unwrap();
-        assert_eq!(contact.get_name(), "Dave Mueller");
+        assert_eq!(contact.get_name(), "Mueller, Dave");
        assert_eq!(contact.get_addr(), "dave@example.org");

        let contact_id = Contact::create(&t.ctx, "name1", "name2 <dave@example.org>")
--- a/src/context.rs
+++ b/src/context.rs
@@ -540,7 +540,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_fresh_msgs() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let fresh = t.ctx.get_fresh_msgs().await;
        assert!(fresh.is_empty())
    }
@@ -595,13 +595,13 @@ mod tests {

    #[async_std::test]
    async fn no_crashes_on_context_deref() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        std::mem::drop(t.ctx);
    }

    #[async_std::test]
    async fn test_get_info() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        let info = t.ctx.get_info().await;
        assert!(info.get("database_dir").is_some());
--- a/src/dc_receive_imf.rs
+++ b/src/dc_receive_imf.rs
@@ -45,13 +45,14 @@ pub async fn dc_receive_imf(
 ) -> Result<()> {
    info!(
        context,
-        "Receiving message {}/{}...",
+        "Receiving message {}/{}, seen={}...",
        if !server_folder.as_ref().is_empty() {
            server_folder.as_ref()
        } else {
            "?"
        },
        server_uid,
+        seen
    );

    if std::env::var(crate::DCC_MIME_DEBUG).unwrap_or_default() == "2" {
@@ -227,6 +228,19 @@ pub async fn dc_receive_imf(
            context
                .do_heuristics_moves(server_folder.as_ref(), insert_msg_id)
                .await;
+            if !mime_parser.mdn_reports.is_empty() && mime_parser.has_chat_version() {
+                // This is a Delta Chat MDN. Mark as read.
+                job::add(
+                    context,
+                    job::Job::new(
+                        Action::MarkseenMsgOnImap,
+                        insert_msg_id.to_u32(),
+                        Params::new(),
+                        0,
+                    ),
+                )
+                .await;
+            }
        }
    }

@@ -238,7 +252,7 @@ pub async fn dc_receive_imf(
    cleanup(context, &create_event_to_send, created_db_entries);

    mime_parser
-        .handle_reports(context, from_id, sent_timestamp)
+        .handle_reports(context, from_id, sent_timestamp, &mime_parser.parts)
        .await;

    Ok(())
@@ -332,7 +346,7 @@ async fn add_parts(
        return Ok(());
    }

-    let mut msgrmsg = if mime_parser.has_chat_version() {
+    let mut is_dc_message = if mime_parser.has_chat_version() {
        MessengerMessage::Yes
    } else if is_reply_to_messenger_message(context, mime_parser).await {
        MessengerMessage::Reply
@@ -344,7 +358,7 @@ async fn add_parts(
    let show_emails =
        ShowEmails::from_i32(context.get_config_int(Config::ShowEmails).await).unwrap_or_default();
    if mime_parser.is_system_message != SystemMessage::AutocryptSetupMessage
-        && msgrmsg == MessengerMessage::No
+        && is_dc_message == MessengerMessage::No
    {
        // this message is a classic email not a chat-message nor a reply to one
        match show_emails {
@@ -373,7 +387,7 @@ async fn add_parts(

        // handshake may mark contacts as verified and must be processed before chats are created
        if mime_parser.get(HeaderDef::SecureJoin).is_some() {
-            msgrmsg = MessengerMessage::Yes; // avoid discarding by show_emails setting
+            is_dc_message = MessengerMessage::Yes; // avoid discarding by show_emails setting
            *chat_id = ChatId::new(0);
            allow_creation = true;
            match handle_securejoin_handshake(context, mime_parser, from_id).await {
@@ -405,6 +419,14 @@ async fn add_parts(
                .await
                .unwrap_or_default();

+        if chat_id.is_unset() && mime_parser.failure_report.is_some() {
+            *chat_id = ChatId::new(DC_CHAT_ID_TRASH);
+            info!(
+                context,
+                "Message belongs to an NDN and is not shown in a chat.",
+            );
+        }
+
        // get the chat_id - a chat_id here is no indicator that the chat is displayed in the normal list,
        // it might also be blocked and displayed in the deaddrop as a result
        if chat_id.is_unset() {
@@ -498,7 +520,7 @@ async fn add_parts(
        if Blocked::Not != chat_id_blocked
            && state == MessageState::InFresh
            && !incoming_origin.is_known()
-            && msgrmsg == MessengerMessage::No
+            && is_dc_message == MessengerMessage::No
            && show_emails != ShowEmails::All
        {
            state = MessageState::InNoticed;
@@ -513,7 +535,7 @@ async fn add_parts(

        // handshake may mark contacts as verified and must be processed before chats are created
        if mime_parser.get(HeaderDef::SecureJoin).is_some() {
-            msgrmsg = MessengerMessage::Yes; // avoid discarding by show_emails setting
+            is_dc_message = MessengerMessage::Yes; // avoid discarding by show_emails setting
            *chat_id = ChatId::new(0);
            allow_creation = true;
            match observe_securejoin_on_other_device(context, mime_parser, to_id).await {
@@ -552,7 +574,7 @@ async fn add_parts(
                }
            }
            if chat_id.is_unset() && allow_creation {
-                let create_blocked = if MessengerMessage::No != msgrmsg
+                let create_blocked = if MessengerMessage::No != is_dc_message
                    && !Contact::is_blocked_load(context, to_id).await
                {
                    Blocked::Not
@@ -600,7 +622,13 @@ async fn add_parts(
    // correct message_timestamp, it should not be used before,
    // however, we cannot do this earlier as we need from_id to be set
    let rcvd_timestamp = time();
-    let sort_timestamp = calc_sort_timestamp(context, *sent_timestamp, *chat_id, !seen).await;
+    let sort_timestamp = calc_sort_timestamp(
+        context,
+        *sent_timestamp,
+        *chat_id,
+        state == MessageState::InFresh,
+    )
+    .await;
    *sent_timestamp = std::cmp::min(*sent_timestamp, rcvd_timestamp);

    // unarchive chat
@@ -637,7 +665,7 @@ async fn add_parts(
    let sent_timestamp = *sent_timestamp;
    let is_hidden = *hidden;
    let chat_id = *chat_id;
-    let is_mdn = !mime_parser.reports.is_empty();
+    let is_mdn = !mime_parser.mdn_reports.is_empty();

    // TODO: can this clone be avoided?
    let rfc724_mid = rfc724_mid.to_string();
@@ -654,8 +682,8 @@ async fn add_parts(
                    "INSERT INTO msgs \
         (rfc724_mid, server_folder, server_uid, chat_id, from_id, to_id, timestamp, \
         timestamp_sent, timestamp_rcvd, type, state, msgrmsg,  txt, txt_raw, param, \
-         bytes, hidden, mime_headers,  mime_in_reply_to, mime_references) \
-         VALUES (?,?,?,?,?,?, ?,?,?,?,?,?, ?,?,?,?,?,?, ?,?);",
+         bytes, hidden, mime_headers,  mime_in_reply_to, mime_references, error) \
+         VALUES (?,?,?,?,?,?, ?,?,?,?,?,?, ?,?,?,?,?,?, ?,?, ?);",
                )?;

                let is_location_kml = location_kml_is
@@ -689,7 +717,7 @@ async fn add_parts(
                    rcvd_timestamp,
                    part.typ,
                    state,
-                    msgrmsg,
+                    is_dc_message,
                    part.msg,
                    // txt_raw might contain invalid utf8
                    txt_raw,
@@ -699,6 +727,7 @@ async fn add_parts(
                    mime_headers,
                    mime_in_reply_to,
                    mime_references,
+                    part.error,
                ])?;

                drop(stmt);
@@ -1767,7 +1796,7 @@ mod tests {
    use crate::chat::ChatVisibility;
    use crate::chatlist::Chatlist;
    use crate::message::Message;
-    use crate::test_utils::{configured_offline_context, dummy_context};
+    use crate::test_utils::*;

    #[test]
    fn test_hex_hash() {
@@ -1779,7 +1808,7 @@ mod tests {

    #[async_std::test]
    async fn test_grpid_simple() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"From: hello\n\
                    Subject: outer-subject\n\
                    In-Reply-To: <lqkjwelq123@123123>\n\
@@ -1796,7 +1825,7 @@ mod tests {

    #[async_std::test]
    async fn test_grpid_from_multiple() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"From: hello\n\
                    Subject: outer-subject\n\
                    In-Reply-To: <Gr.HcxyMARjyJy.9-qweqwe@asd.net>\n\
@@ -1833,7 +1862,7 @@ mod tests {

    #[async_std::test]
    async fn test_is_known_rfc724_mid() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let mut msg = Message::new(Viewtype::Text);
        msg.text = Some("first message".to_string());
        let msg_id = chat::add_device_msg(&t.ctx, None, Some(&mut msg))
@@ -1849,7 +1878,7 @@ mod tests {

    #[async_std::test]
    async fn test_is_msgrmsg_rfc724_mid() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let mut msg = Message::new(Viewtype::Text);
        msg.text = Some("first message".to_string());
        let msg_id = chat::add_device_msg(&t.ctx, None, Some(&mut msg))
@@ -1863,34 +1892,34 @@ mod tests {
        assert!(!is_msgrmsg_rfc724_mid(&t.ctx, "nonexistant@message.id").await);
    }

-    static MSGRMSG: &[u8] = b"From: Bob <bob@example.org>\n\
-                    To: alice@example.org\n\
+    static MSGRMSG: &[u8] = b"From: Bob <bob@example.com>\n\
+                    To: alice@example.com\n\
                    Chat-Version: 1.0\n\
                    Subject: Chat: hello\n\
-                    Message-ID: <Mr.1111@example.org>\n\
+                    Message-ID: <Mr.1111@example.com>\n\
                    Date: Sun, 22 Mar 2020 22:37:55 +0000\n\
                    \n\
                    hello\n";

-    static ONETOONE_NOREPLY_MAIL: &[u8] = b"From: Bob <bob@example.org>\n\
-                    To: alice@example.org\n\
+    static ONETOONE_NOREPLY_MAIL: &[u8] = b"From: Bob <bob@example.com>\n\
+                    To: alice@example.com\n\
                    Subject: Chat: hello\n\
-                    Message-ID: <2222@example.org>\n\
+                    Message-ID: <2222@example.com>\n\
                    Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                    \n\
                    hello\n";

-    static GRP_MAIL: &[u8] = b"From: bob@example.org\n\
-                    To: alice@example.org, claire@example.org\n\
+    static GRP_MAIL: &[u8] = b"From: bob@example.com\n\
+                    To: alice@example.com, claire@example.com\n\
                    Subject: group with Alice, Bob and Claire\n\
-                    Message-ID: <3333@example.org>\n\
+                    Message-ID: <3333@example.com>\n\
                    Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
                    \n\
                    hello\n";

    #[async_std::test]
    async fn test_adhoc_group_show_chats_only() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        assert_eq!(t.ctx.get_config_int(Config::ShowEmails).await, 0);

        let chats = Chatlist::try_load(&t.ctx, 0, None, None).await.unwrap();
@@ -1917,7 +1946,7 @@ mod tests {

    #[async_std::test]
    async fn test_adhoc_group_show_accepted_contact_unknown() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        t.ctx
            .set_config(Config::ShowEmails, Some("1"))
            .await
@@ -1933,12 +1962,12 @@ mod tests {

    #[async_std::test]
    async fn test_adhoc_group_show_accepted_contact_known() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        t.ctx
            .set_config(Config::ShowEmails, Some("1"))
            .await
            .unwrap();
-        Contact::create(&t.ctx, "Bob", "bob@example.org")
+        Contact::create(&t.ctx, "Bob", "bob@example.com")
            .await
            .unwrap();
        dc_receive_imf(&t.ctx, GRP_MAIL, "INBOX", 1, false)
@@ -1953,7 +1982,7 @@ mod tests {

    #[async_std::test]
    async fn test_adhoc_group_show_accepted_contact_accepted() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        t.ctx
            .set_config(Config::ShowEmails, Some("1"))
            .await
@@ -1999,7 +2028,7 @@ mod tests {

    #[async_std::test]
    async fn test_adhoc_group_show_all() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        t.ctx
            .set_config(Config::ShowEmails, Some("2"))
            .await
@@ -2024,7 +2053,7 @@ mod tests {
    #[async_std::test]
    async fn test_read_receipt_and_unarchive() {
        // create alice's account
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;

        // create one-to-one with bob, archive one-to-one
        let bob_id = Contact::create(&t.ctx, "bob", "bob@exampel.org")
@@ -2067,14 +2096,14 @@ mod tests {
        dc_receive_imf(
            &t.ctx,
            format!(
-                "From: alice@example.org\n\
-                 To: bob@example.org\n\
+                "From: alice@example.com\n\
+                 To: bob@example.com\n\
                 Subject: foo\n\
-                 Message-ID: <Gr.{}.12345678901@example.org>\n\
+                 Message-ID: <Gr.{}.12345678901@example.com>\n\
                 Chat-Version: 1.0\n\
                 Chat-Group-ID: {}\n\
                 Chat-Group-Name: foo\n\
-                 Chat-Disposition-Notification-To: alice@example.org\n\
+                 Chat-Disposition-Notification-To: alice@example.com\n\
                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
                 \n\
                 hello\n",
@@ -2103,12 +2132,12 @@ mod tests {
        dc_receive_imf(
            &t.ctx,
            format!(
-                "From: bob@example.org\n\
-                 To: alice@example.org\n\
+                "From: bob@example.com\n\
+                 To: alice@example.com\n\
                 Subject: message opened\n\
                 Date: Sun, 22 Mar 2020 23:37:57 +0000\n\
                 Chat-Version: 1.0\n\
-                 Message-ID: <Mr.12345678902@example.org>\n\
+                 Message-ID: <Mr.12345678902@example.com>\n\
                 Content-Type: multipart/report; report-type=disposition-notification; boundary=\"SNIPP\"\n\
                 \n\
                 \n\
@@ -2122,9 +2151,9 @@ mod tests {
                 Content-Type: message/disposition-notification\n\
                 \n\
                 Reporting-UA: Delta Chat 1.28.0\n\
-                 Original-Recipient: rfc822;bob@example.org\n\
-                 Final-Recipient: rfc822;bob@example.org\n\
-                 Original-Message-ID: <Gr.{}.12345678901@example.org>\n\
+                 Original-Recipient: rfc822;bob@example.com\n\
+                 Final-Recipient: rfc822;bob@example.com\n\
+                 Original-Message-ID: <Gr.{}.12345678901@example.com>\n\
                 Disposition: manual-action/MDN-sent-automatically; displayed\n\
                 \n\
                 \n\
@@ -2164,7 +2193,7 @@ mod tests {
        // are very rare, however, we have to add them to the database (they go to the
        // "deaddrop" chat) to avoid a re-download from the server. See also [**]

-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        let context = &t.ctx;

        let chats = Chatlist::try_load(&t.ctx, 0, None, None).await.unwrap();
@@ -2172,9 +2201,9 @@ mod tests {

        dc_receive_imf(
            context,
-            b"To: bob@example.org\n\
+            b"To: bob@example.com\n\
                 Subject: foo\n\
-                 Message-ID: <3924@example.org>\n\
+                 Message-ID: <3924@example.com>\n\
                 Chat-Version: 1.0\n\
                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
                 \n\
@@ -2193,7 +2222,7 @@ mod tests {

    #[async_std::test]
    async fn test_escaped_from() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        let contact_id = Contact::create(&t.ctx, "foobar", "foobar@example.com")
            .await
            .unwrap();
@@ -2203,9 +2232,9 @@ mod tests {
        dc_receive_imf(
            &t.ctx,
            b"From: =?UTF-8?B?0JjQvNGPLCDQpNCw0LzQuNC70LjRjw==?= <foobar@example.com>\n\
-                 To: alice@example.org\n\
+                 To: alice@example.com\n\
                 Subject: foo\n\
-                 Message-ID: <asdklfjjaweofi@example.org>\n\
+                 Message-ID: <asdklfjjaweofi@example.com>\n\
                 Chat-Version: 1.0\n\
                 Chat-Disposition-Notification-To: =?UTF-8?B?0JjQvNGPLCDQpNCw0LzQuNC70LjRjw==?= <foobar@example.com>\n\
                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
@@ -2220,7 +2249,7 @@ mod tests {
                .await
                .unwrap()
                .get_authname(),
-            "Фамилия Имя", // The name was "Имя, Фамилия" and ("lastname, firstname") and should be swapped to "firstname, lastname"
+            "Имя, Фамилия",
        );
        let msgs = chat::get_chat_msgs(&t.ctx, chat_id, 0, None).await;
        assert_eq!(msgs.len(), 1);
@@ -2235,7 +2264,7 @@ mod tests {

    #[async_std::test]
    async fn test_escaped_recipients() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        Contact::create(&t.ctx, "foobar", "foobar@example.com")
            .await
            .unwrap();
@@ -2249,10 +2278,10 @@ mod tests {
        dc_receive_imf(
            &t.ctx,
            b"From: Foobar <foobar@example.com>\n\
-                 To: =?UTF-8?B?0JjQvNGPLCDQpNCw0LzQuNC70LjRjw==?= alice@example.org\n\
+                 To: =?UTF-8?B?0JjQvNGPLCDQpNCw0LzQuNC70LjRjw==?= alice@example.com\n\
                 Cc: =?utf-8?q?=3Ch2=3E?= <carl@host.tld>\n\
                 Subject: foo\n\
-                 Message-ID: <asdklfjjaweofi@example.org>\n\
+                 Message-ID: <asdklfjjaweofi@example.com>\n\
                 Chat-Version: 1.0\n\
                 Chat-Disposition-Notification-To: <foobar@example.com>\n\
                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
@@ -2283,7 +2312,7 @@ mod tests {

    #[async_std::test]
    async fn test_cc_to_contact() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        Contact::create(&t.ctx, "foobar", "foobar@example.com")
            .await
            .unwrap();
@@ -2301,10 +2330,10 @@ mod tests {
        dc_receive_imf(
            &t.ctx,
            b"From: Foobar <foobar@example.com>\n\
-                 To: alice@example.org\n\
+                 To: alice@example.com\n\
                 Cc: Carl <carl@host.tld>\n\
                 Subject: foo\n\
-                 Message-ID: <asdklfjjaweofi@example.org>\n\
+                 Message-ID: <asdklfjjaweofi@example.com>\n\
                 Chat-Version: 1.0\n\
                 Chat-Disposition-Notification-To: <foobar@example.com>\n\
                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
@@ -2324,4 +2353,184 @@ mod tests {
            "Carl"
        );
    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_tiscali() {
+        test_parse_ndn(
+            "alice@tiscali.it",
+            "shenauithz@testrun.org",
+            "Mr.un2NYERi1RM.lbQ5F9q-QyJ@tiscali.it",
+            include_bytes!("../test-data/message/tiscali_ndn.eml"),
+            "",
+        )
+        .await;
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_testrun() {
+        test_parse_ndn(
+            "alice@testrun.org",
+            "hcksocnsofoejx@five.chat",
+            "Mr.A7pTA5IgrUA.q4bP41vAJOp@testrun.org",
+            include_bytes!("../test-data/message/testrun_ndn.eml"),
+            "Undelivered Mail Returned to Sender – This is the mail system at host hq5.merlinux.eu.\n\nI\'m sorry to have to inform you that your message could not\nbe delivered to one or more recipients. It\'s attached below.\n\nFor further assistance, please send mail to postmaster.\n\nIf you do so, please include this problem report. You can\ndelete your own text from the attached returned message.\n\n                   The mail system\n\n<hcksocnsofoejx@five.chat>: host mail.five.chat[195.62.125.103] said: 550 5.1.1\n    <hcksocnsofoejx@five.chat>: Recipient address rejected: User unknown in\n    virtual mailbox table (in reply to RCPT TO command)"
+        )
+        .await;
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_yahoo() {
+        test_parse_ndn(
+            "alice@yahoo.com",
+            "haeclirth.sinoenrat@yahoo.com",
+            "1680295672.3657931.1591783872936@mail.yahoo.com",
+            include_bytes!("../test-data/message/yahoo_ndn.eml"),
+            "Failure Notice – Sorry, we were unable to deliver your message to the following address.\n\n<haeclirth.sinoenrat@yahoo.com>:\n554: delivery error: dd Not a valid recipient - atlas117.free.mail.ne1.yahoo.com"
+        )
+        .await;
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_gmail() {
+        test_parse_ndn(
+            "alice@gmail.com",
+            "assidhfaaspocwaeofi@gmail.com",
+            "CABXKi8zruXJc_6e4Dr087H5wE7sLp+u250o0N2q5DdjF_r-8wg@mail.gmail.com",
+            include_bytes!("../test-data/message/gmail_ndn.eml"),
+            "Delivery Status Notification (Failure) – ** Die Adresse wurde nicht gefunden **\n\nIhre Nachricht wurde nicht an assidhfaaspocwaeofi@gmail.com zugestellt, weil die Adresse nicht gefunden wurde oder keine E-Mails empfangen kann.\n\nHier erfahren Sie mehr: https://support.google.com/mail/?p=NoSuchUser\n\nAntwort:\n\n550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient\'s email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser i18sor6261697wrs.38 - gsmtp",
+        )
+        .await;
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_gmx() {
+        test_parse_ndn(
+            "alice@gmx.com",
+            "snaerituhaeirns@gmail.com",
+            "9c9c2a32-056b-3592-c372-d7e8f0bd4bc2@gmx.de",
+            include_bytes!("../test-data/message/gmx_ndn.eml"),
+            "Mail delivery failed: returning message to sender – This message was created automatically by mail delivery software.\n\nA message that you sent could not be delivered to one or more of\nits recipients. This is a permanent error. The following address(es)\nfailed:\n\nsnaerituhaeirns@gmail.com:\nSMTP error from remote server for RCPT TO command, host: gmail-smtp-in.l.google.com (66.102.1.27) reason: 550-5.1.1 The email account that you tried to reach does not exist. Please\n try\n550-5.1.1 double-checking the recipient\'s email address for typos or\n550-5.1.1 unnecessary spaces. Learn more at\n550 5.1.1  https://support.google.com/mail/?p=NoSuchUser f6si2517766wmc.21\n9 - gsmtp"
+        )
+        .await;
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_posteo() {
+        test_parse_ndn(
+            "alice@posteo.org",
+            "hanerthaertidiuea@gmx.de",
+            "04422840-f884-3e37-5778-8192fe22d8e1@posteo.de",
+            include_bytes!("../test-data/message/posteo_ndn.eml"),
+            "Undelivered Mail Returned to Sender – This is the mail system at host mout01.posteo.de.\n\nI\'m sorry to have to inform you that your message could not\nbe delivered to one or more recipients. It\'s attached below.\n\nFor further assistance, please send mail to postmaster.\n\nIf you do so, please include this problem report. You can\ndelete your own text from the attached returned message.\n\n                   The mail system\n\n<hanerthaertidiuea@gmx.de>: host mx01.emig.gmx.net[212.227.17.5] said: 550\n    Requested action not taken: mailbox unavailable (in reply to RCPT TO\n    command)",
+        )
+        .await;
+    }
+
+    // ndn = Non Delivery Notification
+    async fn test_parse_ndn(
+        self_addr: &str,
+        foreign_addr: &str,
+        rfc724_mid_outgoing: &str,
+        raw_ndn: &[u8],
+        error_msg: &str,
+    ) {
+        let t = TestContext::new().await;
+        t.configure_addr(self_addr).await;
+
+        dc_receive_imf(
+            &t.ctx,
+            format!(
+                "From: {}\n\
+                To: {}\n\
+                Subject: foo\n\
+                Message-ID: <{}>\n\
+                Chat-Version: 1.0\n\
+                Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
+                \n\
+                hello\n",
+                self_addr, foreign_addr, rfc724_mid_outgoing
+            )
+            .as_bytes(),
+            "INBOX",
+            1,
+            false,
+        )
+        .await
+        .unwrap();
+
+        let chats = Chatlist::try_load(&t.ctx, 0, None, None).await.unwrap();
+        let msg_id = chats.get_msg_id(0).unwrap();
+
+        // Check that the ndn would be downloaded:
+        let headers = mailparse::parse_mail(raw_ndn).unwrap().headers;
+        assert!(
+            crate::imap::prefetch_should_download(&t.ctx, &headers, ShowEmails::Off)
+                .await
+                .unwrap()
+        );
+
+        dc_receive_imf(&t.ctx, raw_ndn, "INBOX", 1, false)
+            .await
+            .unwrap();
+        let msg = Message::load_from_db(&t.ctx, msg_id).await.unwrap();
+
+        assert_eq!(msg.state, MessageState::OutFailed);
+        assert_eq!(msg.error, error_msg);
+    }
+
+    #[async_std::test]
+    async fn test_parse_ndn_group_msg() {
+        let t = TestContext::new().await;
+        t.configure_addr("alice@gmail.com").await;
+
+        dc_receive_imf(
+            &t.ctx,
+            b"From: alice@gmail.com\n\
+                 To: bob@example.com, assidhfaaspocwaeofi@gmail.com\n\
+                 Subject: foo\n\
+                 Message-ID: <CADWx9Cs32Wa7Gy-gM0bvbq54P_FEHe7UcsAV=yW7sVVW=fiMYQ@mail.gmail.com>\n\
+                 Chat-Version: 1.0\n\
+                 Chat-Group-ID: abcde\n\
+                 Chat-Group-Name: foo\n\
+                 Chat-Disposition-Notification-To: alice@example.com\n\
+                 Date: Sun, 22 Mar 2020 22:37:57 +0000\n\
+                 \n\
+                 hello\n",
+            "INBOX",
+            1,
+            false,
+        )
+        .await
+        .unwrap();
+
+        let chats = Chatlist::try_load(&t.ctx, 0, None, None).await.unwrap();
+        let msg_id = chats.get_msg_id(0).unwrap();
+
+        let raw = include_bytes!("../test-data/message/gmail_ndn_group.eml");
+        dc_receive_imf(&t.ctx, raw, "INBOX", 1, false)
+            .await
+            .unwrap();
+
+        let msg = Message::load_from_db(&t.ctx, msg_id).await.unwrap();
+
+        assert_eq!(msg.state, MessageState::OutFailed);
+
+        let msgs = chat::get_chat_msgs(&t.ctx, msg.chat_id, 0, None).await;
+        let last_msg = Message::load_from_db(&t.ctx, *msgs.last().unwrap())
+            .await
+            .unwrap();
+
+        assert_eq!(
+            last_msg.text,
+            Some(
+                t.ctx
+                    .stock_string_repl_str(
+                        StockMessage::FailedSendingTo,
+                        "assidhfaaspocwaeofi@gmail.com",
+                    )
+                    .await,
+            )
+        );
+        assert_eq!(last_msg.from_id, DC_CONTACT_ID_INFO);
+    }
 }
--- a/src/dc_tools.rs
+++ b/src/dc_tools.rs
@@ -774,7 +774,7 @@ mod tests {

    #[async_std::test]
    async fn test_file_handling() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let context = &t.ctx;
        macro_rules! dc_file_exist {
            ($ctx:expr, $fname:expr) => {
@@ -853,7 +853,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_smeared_timestamp() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_ne!(
            dc_create_smeared_timestamp(&t.ctx).await,
            dc_create_smeared_timestamp(&t.ctx).await
@@ -869,7 +869,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_smeared_timestamps() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let count = MAX_SECONDS_TO_LEND_FROM_FUTURE - 1;
        let start = dc_create_smeared_timestamps(&t.ctx, count as usize).await;
        let next = dc_smeared_time(&t.ctx).await;
--- a/src/e2ee.rs
+++ b/src/e2ee.rs
@@ -327,14 +327,14 @@ mod tests {

        #[async_std::test]
        async fn test_prexisting() {
-            let t = dummy_context().await;
-            let test_addr = configure_alice_keypair(&t.ctx).await;
+            let t = TestContext::new().await;
+            let test_addr = t.configure_alice().await;
            assert_eq!(ensure_secret_key_exists(&t.ctx).await.unwrap(), test_addr);
        }

        #[async_std::test]
        async fn test_not_configured() {
-            let t = dummy_context().await;
+            let t = TestContext::new().await;
            assert!(ensure_secret_key_exists(&t.ctx).await.is_err());
        }
    }
--- a/src/headerdef.rs
+++ b/src/headerdef.rs
@@ -21,6 +21,7 @@ pub enum HeaderDef {
    References,
    InReplyTo,
    Precedence,
+    ContentType,
    ChatVersion,
    ChatGroupId,
    ChatGroupName,
--- a/src/imap/mod.rs
+++ b/src/imap/mod.rs
@@ -3,6 +3,8 @@
 //! uses [async-email/async-imap](https://github.com/async-email/async-imap)
 //! to implement connect, fetch, delete functionality with standard IMAP servers.

+#![forbid(clippy::indexing_slicing)]
+
 use std::collections::BTreeMap;

 use async_imap::{
@@ -732,9 +734,17 @@ impl Imap {
        folder: S,
        server_uids: &[u32],
    ) -> (Option<u32>, usize) {
-        if server_uids.is_empty() {
-            return (None, 0);
-        }
+        let set = match server_uids {
+            [] => return (None, 0),
+            [server_uid] => server_uid.to_string(),
+            [first_uid, .., last_uid] => {
+                // XXX: it is assumed that UIDs are sorted and
+                // contiguous. If UIDs are not contiguous, more
+                // messages than needed will be downloaded.
+                debug_assert!(first_uid < last_uid, "uids must be sorted");
+                format!("{}:{}", first_uid, last_uid)
+            }
+        };

        if !self.is_connected() {
            warn!(context, "Not connected");
@@ -750,15 +760,6 @@ impl Imap {

        let session = self.session.as_mut().unwrap();

-        let set = if server_uids.len() == 1 {
-            server_uids[0].to_string()
-        } else {
-            let first_uid = server_uids[0];
-            let last_uid = server_uids[server_uids.len() - 1];
-            assert!(first_uid < last_uid, "uids must be sorted");
-            format!("{}:{}", first_uid, last_uid)
-        };
-
        let mut msgs = match session.uid_fetch(&set, BODY_FLAGS).await {
            Ok(msgs) => msgs,
            Err(err) => {
@@ -811,7 +812,6 @@ impl Imap {
                    Ok(_) => Some(server_uid),
                    Err(err) => {
                        warn!(context, "dc_receive_imf error: {}", err);
-                        read_errors += 1;
                        None
                    }
                }
@@ -1449,7 +1449,7 @@ async fn prefetch_is_reply_to_chat_message(
    false
 }

-async fn prefetch_should_download(
+pub(crate) async fn prefetch_should_download(
    context: &Context,
    headers: &[mailparse::MailHeader<'_>],
    show_emails: ShowEmails,
@@ -1457,6 +1457,13 @@ async fn prefetch_should_download(
    let is_chat_message = headers.get_header_value(HeaderDef::ChatVersion).is_some();
    let is_reply_to_chat_message = prefetch_is_reply_to_chat_message(context, &headers).await;

+    let maybe_ndn = if let Some(from) = headers.get_header_value(HeaderDef::From_) {
+        let from = from.to_ascii_lowercase();
+        from.contains("mailer-daemon") || from.contains("mail-daemon")
+    } else {
+        false
+    };
+
    // Autocrypt Setup Message should be shown even if it is from non-chat client.
    let is_autocrypt_setup_message = headers
        .get_header_value(HeaderDef::AutocryptSetupMessage)
@@ -1467,6 +1474,7 @@ async fn prefetch_should_download(
    let accepted_contact = origin.is_known();

    let show = is_autocrypt_setup_message
+        || maybe_ndn
        || match show_emails {
            ShowEmails::Off => is_chat_message || is_reply_to_chat_message,
            ShowEmails::AcceptedContacts => {
--- a/src/imex.rs
+++ b/src/imex.rs
@@ -776,9 +776,9 @@ mod tests {

    #[async_std::test]
    async fn test_render_setup_file() {
-        let t = test_context().await;
+        let t = TestContext::new().await;

-        configure_alice_keypair(&t.ctx).await;
+        t.configure_alice().await;
        let msg = render_setup_file(&t.ctx, "hello").await.unwrap();
        println!("{}", &msg);
        // Check some substrings, indicating things got substituted.
@@ -795,12 +795,12 @@ mod tests {

    #[async_std::test]
    async fn test_render_setup_file_newline_replace() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_stock_translation(StockMessage::AcSetupMsgBody, "hello\r\nthere".to_string())
            .await
            .unwrap();
-        configure_alice_keypair(&t.ctx).await;
+        t.configure_alice().await;
        let msg = render_setup_file(&t.ctx, "pw").await.unwrap();
        println!("{}", &msg);
        assert!(msg.contains("<p>hello<br>there</p>"));
@@ -808,7 +808,7 @@ mod tests {

    #[async_std::test]
    async fn test_create_setup_code() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let setupcode = create_setup_code(&t.ctx);
        assert_eq!(setupcode.len(), 44);
        assert_eq!(setupcode.chars().nth(4).unwrap(), '-');
@@ -823,7 +823,7 @@ mod tests {

    #[async_std::test]
    async fn test_export_key_to_asc_file() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let key = alice_keypair().public;
        let blobdir = "$BLOBDIR";
        assert!(export_key_to_asc_file(&context.ctx, blobdir, None, &key)
--- a/src/job.rs
+++ b/src/job.rs
@@ -806,7 +806,7 @@ pub async fn send_msg_job(context: &Context, msg_id: MsgId) -> Result<Option<Job

    if rendered_msg.is_encrypted && !needs_encryption {
        msg.param.set_int(Param::GuaranteeE2ee, 1);
-        msg.save_param_to_disk(context).await;
+        msg.update_param(context).await;
    }

    ensure!(!recipients.is_empty(), "no recipients for smtp job set");
@@ -1209,7 +1209,7 @@ mod tests {
        // We want to ensure that loading jobs skips over jobs which
        // fails to load from the database instead of failing to load
        // all jobs.
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        insert_job(&t.ctx, -1).await; // This can not be loaded into Job struct.
        let jobs = load_next(
            &t.ctx,
@@ -1231,7 +1231,7 @@ mod tests {

    #[async_std::test]
    async fn test_load_next_job_one() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        insert_job(&t.ctx, 1).await;

--- a/src/key.rs
+++ b/src/key.rs
@@ -550,8 +550,8 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
    #[async_std::test]
    async fn test_load_self_existing() {
        let alice = alice_keypair();
-        let t = dummy_context().await;
-        configure_alice_keypair(&t.ctx).await;
+        let t = TestContext::new().await;
+        t.configure_alice().await;
        let pubkey = SignedPublicKey::load_self(&t.ctx).await.unwrap();
        assert_eq!(alice.public, pubkey);
        let seckey = SignedSecretKey::load_self(&t.ctx).await.unwrap();
@@ -560,7 +560,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD

    #[async_std::test]
    async fn test_load_self_generate_public() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_config(Config::ConfiguredAddr, Some("alice@example.com"))
            .await
@@ -571,7 +571,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD

    #[async_std::test]
    async fn test_load_self_generate_secret() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_config(Config::ConfiguredAddr, Some("alice@example.com"))
            .await
@@ -584,7 +584,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
    async fn test_load_self_generate_concurrent() {
        use std::thread;

-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_config(Config::ConfiguredAddr, Some("alice@example.com"))
            .await
@@ -611,7 +611,7 @@ i8pcjGO+IZffvyZJVRWfVooBJmWWbPB1pueo3tx8w3+fcuzpxz+RLFKaPyqXO+dD
    async fn test_save_self_key_twice() {
        // Saving the same key twice should result in only one row in
        // the keypairs table.
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let ctx = Arc::new(t.ctx);

        let ctx1 = ctx.clone();
--- a/src/keyring.rs
+++ b/src/keyring.rs
@@ -79,8 +79,8 @@ mod tests {
    #[async_std::test]
    async fn test_keyring_load_self() {
        // new_self() implies load_self()
-        let t = dummy_context().await;
-        configure_alice_keypair(&t.ctx).await;
+        let t = TestContext::new().await;
+        t.configure_alice().await;
        let alice = alice_keypair();

        let pub_ring: Keyring<SignedPublicKey> = Keyring::new_self(&t.ctx).await.unwrap();
--- a/src/location.rs
+++ b/src/location.rs
@@ -530,7 +530,7 @@ pub async fn save(
            accuracy,
            ..
        } = location;
-        context
+        let (loc_id, ts) = context
            .sql
            .with_conn(move |mut conn| {
                let mut stmt_test = conn
@@ -569,9 +569,11 @@ pub async fn save(
                        )?;
                    }
                }
-                Ok(())
+                Ok((newest_location_id, newest_timestamp))
            })
            .await?;
+        newest_timestamp = ts;
+        newest_location_id = loc_id;
    }

    Ok(newest_location_id)
@@ -722,11 +724,11 @@ pub(crate) async fn job_maybe_send_locations_ended(
 #[cfg(test)]
 mod tests {
    use super::*;
-    use crate::test_utils::dummy_context;
+    use crate::test_utils::TestContext;

    #[async_std::test]
    async fn test_kml_parse() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;

        let xml =
            b"<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n<kml xmlns=\"http://www.opengis.net/kml/2.2\">\n<Document addr=\"user@example.org\">\n<Placemark><Timestamp><when>2019-03-06T21:09:57Z</when></Timestamp><Point><coordinates accuracy=\"32.000000\">9.423110,53.790302</coordinates></Point></Placemark>\n<PlaceMARK>\n<Timestamp><WHEN > \n\t2018-12-13T22:11:12Z\t</WHEN></Timestamp><Point><coordinates aCCuracy=\"2.500000\"> 19.423110 \t , \n 63.790302\n </coordinates></Point></PlaceMARK>\n</Document>\n</kml>";
--- a/src/message.rs
+++ b/src/message.rs
@@ -14,7 +14,7 @@ use crate::error::{ensure, Error};
 use crate::events::Event;
 use crate::job::{self, Action};
 use crate::lot::{Lot, LotState, Meaning};
-use crate::mimeparser::SystemMessage;
+use crate::mimeparser::{FailureReport, SystemMessage};
 use crate::param::*;
 use crate::pgp::*;
 use crate::stock::StockMessage;
@@ -255,6 +255,7 @@ pub struct Message {
    pub(crate) starred: bool,
    pub(crate) chat_blocked: Blocked,
    pub(crate) location_id: u32,
+    pub(crate) error: String,
    pub(crate) param: Params,
 }

@@ -289,6 +290,7 @@ impl Message {
                    "    m.timestamp_rcvd AS timestamp_rcvd,",
                    "    m.type AS type,",
                    "    m.state AS state,",
+                    "    m.error AS error,",
                    "    m.msgrmsg AS msgrmsg,",
                    "    m.txt AS txt,",
                    "    m.param AS param,",
@@ -316,6 +318,7 @@ impl Message {
                    msg.timestamp_rcvd = row.get("timestamp_rcvd")?;
                    msg.viewtype = row.get("type")?;
                    msg.state = row.get("state")?;
+                    msg.error = row.get("error")?;
                    msg.is_dc_message = row.get("msgrmsg")?;

                    let text;
@@ -390,7 +393,7 @@ impl Message {
                    }

                    if !self.id.is_unset() {
-                        self.save_param_to_disk(context).await;
+                        self.update_param(context).await;
                    }
                }
            }
@@ -643,10 +646,10 @@ impl Message {
        if duration > 0 {
            self.param.set_int(Param::Duration, duration);
        }
-        self.save_param_to_disk(context).await;
+        self.update_param(context).await;
    }

-    pub async fn save_param_to_disk(&mut self, context: &Context) -> bool {
+    pub async fn update_param(&mut self, context: &Context) -> bool {
        context
            .sql
            .execute(
@@ -763,9 +766,10 @@ impl From<MessageState> for LotState {
 impl MessageState {
    pub fn can_fail(self) -> bool {
        match self {
-            MessageState::OutPreparing | MessageState::OutPending | MessageState::OutDelivered => {
-                true
-            }
+            MessageState::OutPreparing
+            | MessageState::OutPending
+            | MessageState::OutDelivered
+            | MessageState::OutMdnRcvd => true, // OutMdnRcvd can still fail because it could be a group message and only some recipients failed.
            _ => false,
        }
    }
@@ -937,8 +941,9 @@ pub async fn get_msg_info(context: &Context, msg_id: MsgId) -> String {
    }

    ret += "\n";
-    if let Some(err) = msg.param.get(Param::Error) {
-        ret += &format!("Error: {}", err)
+
+    if !msg.error.is_empty() {
+        ret += &format!("Error: {}", msg.error);
    }

    if let Some(path) = msg.get_file(context) {
@@ -1251,33 +1256,38 @@ pub async fn exists(context: &Context, msg_id: MsgId) -> bool {

 pub async fn set_msg_failed(context: &Context, msg_id: MsgId, error: Option<impl AsRef<str>>) {
    if let Ok(mut msg) = Message::load_from_db(context, msg_id).await {
+        let error = error.map(|e| e.as_ref().to_string()).unwrap_or_default();
        if msg.state.can_fail() {
            msg.state = MessageState::OutFailed;
-        }
-        if let Some(error) = error {
-            msg.param.set(Param::Error, error.as_ref());
-            warn!(context, "Message failed: {}", error.as_ref());
+            warn!(context, "{} failed: {}", msg_id, error);
+        } else {
+            warn!(
+                context,
+                "{} seems to have failed ({}), but state is {}", msg_id, error, msg.state
+            )
        }

-        if context
+        match context
            .sql
            .execute(
-                "UPDATE msgs SET state=?, param=? WHERE id=?;",
-                paramsv![msg.state, msg.param.to_string(), msg_id],
+                "UPDATE msgs SET state=?, error=? WHERE id=?;",
+                paramsv![msg.state, error, msg_id],
            )
            .await
-            .is_ok()
        {
-            context.emit_event(Event::MsgFailed {
+            Ok(_) => context.emit_event(Event::MsgFailed {
                chat_id: msg.chat_id,
                msg_id,
-            });
+            }),
+            Err(e) => {
+                warn!(context, "{:?}", e);
+            }
        }
    }
 }

 /// returns Some if an event should be send
-pub async fn mdn_from_ext(
+pub async fn handle_mdn(
    context: &Context,
    from_id: u32,
    rfc724_mid: &str,
@@ -1318,10 +1328,10 @@ pub async fn mdn_from_ext(
    if let Ok((msg_id, chat_id, chat_type, msg_state)) = res {
        let mut read_by_all = false;

-        // if already marked as MDNS_RCVD msgstate_can_fail() returns false.
-        // however, it is important, that ret_msg_id is set above as this
-        // will allow the caller eg. to move the message away
-        if msg_state.can_fail() {
+        if msg_state == MessageState::OutPreparing
+            || msg_state == MessageState::OutPending
+            || msg_state == MessageState::OutDelivered
+        {
            let mdn_already_in_table = context
                .sql
                .exists(
@@ -1384,6 +1394,69 @@ pub async fn mdn_from_ext(
    None
 }

+/// Marks a message as failed after an ndn (non-delivery-notification) arrived.
+/// Where appropriate, also adds an info message telling the user which of the recipients of a group message failed.
+pub(crate) async fn handle_ndn(
+    context: &Context,
+    failed: &FailureReport,
+    error: Option<impl AsRef<str>>,
+) {
+    if failed.rfc724_mid.is_empty() {
+        return;
+    }
+
+    let res = context
+        .sql
+        .query_row(
+            concat!(
+                "SELECT",
+                "    m.id AS msg_id,",
+                "    c.id AS chat_id,",
+                "    c.type AS type",
+                " FROM msgs m LEFT JOIN chats c ON m.chat_id=c.id",
+                " WHERE rfc724_mid=? AND from_id=1",
+            ),
+            paramsv![failed.rfc724_mid],
+            |row| {
+                Ok((
+                    row.get::<_, MsgId>("msg_id")?,
+                    row.get::<_, ChatId>("chat_id")?,
+                    row.get::<_, Chattype>("type")?,
+                ))
+            },
+        )
+        .await;
+    if let Err(ref err) = res {
+        info!(context, "Failed to select NDN {:?}", err);
+    }
+
+    if let Ok((msg_id, chat_id, chat_type)) = res {
+        set_msg_failed(context, msg_id, error).await;
+
+        if chat_type == Chattype::Group || chat_type == Chattype::VerifiedGroup {
+            if let Some(failed_recipient) = &failed.failed_recipient {
+                let contact_id =
+                    Contact::lookup_id_by_addr(context, failed_recipient, Origin::Unknown).await;
+                if let Ok(contact) = Contact::load_from_db(context, contact_id).await {
+                    // Tell the user which of the recipients failed if we know that (because in a group, this might otherwise be unclear)
+                    chat::add_info_msg(
+                        context,
+                        chat_id,
+                        context
+                            .stock_string_repl_str(
+                                StockMessage::FailedSendingTo,
+                                contact.get_display_name(),
+                            )
+                            .await,
+                    )
+                    .await;
+                    context.emit_event(Event::ChatModified(chat_id));
+                }
+            }
+        }
+    }
+}
+
 /// The number of messages assigned to real chat (!=deaddrop, !=trash)
 pub async fn get_real_msg_cnt(context: &Context) -> i32 {
    match context
@@ -1572,7 +1645,7 @@ mod tests {
    async fn test_prepare_message_and_send() {
        use crate::config::Config;

-        let d = test::dummy_context().await;
+        let d = test::TestContext::new().await;
        let ctx = &d.ctx;

        let contact = Contact::create(ctx, "", "dest@example.com")
@@ -1596,7 +1669,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_summarytext_by_raw() {
-        let d = test::dummy_context().await;
+        let d = test::TestContext::new().await;
        let ctx = &d.ctx;

        let some_text = Some("bla bla".to_string());
--- a/src/mimefactory.rs
+++ b/src/mimefactory.rs
@@ -1210,7 +1210,6 @@ mod tests {
    use crate::chatlist::Chatlist;
    use crate::dc_receive_imf::dc_receive_imf;
    use crate::mimeparser::*;
-    use crate::test_utils::configured_offline_context;
    use crate::test_utils::TestContext;

    #[test]
@@ -1300,10 +1299,10 @@ mod tests {
        // 1.: Receive a mail from an MUA or Delta Chat
        assert_eq!(
            msg_to_subject_str(
-                b"From: Bob <bob@example.org>\n\
-                To: alice@example.org\n\
+                b"From: Bob <bob@example.com>\n\
+                To: alice@example.com\n\
                Subject: Antw: Chat: hello\n\
-                Message-ID: <2222@example.org>\n\
+                Message-ID: <2222@example.com>\n\
                Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                \n\
                hello\n"
@@ -1314,10 +1313,10 @@ mod tests {

        assert_eq!(
            msg_to_subject_str(
-                b"From: Bob <bob@example.org>\n\
-                To: alice@example.org\n\
+                b"From: Bob <bob@example.com>\n\
+                To: alice@example.com\n\
                Subject: Infos: 42\n\
-                Message-ID: <2222@example.org>\n\
+                Message-ID: <2222@example.com>\n\
                Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                \n\
                hello\n"
@@ -1329,11 +1328,11 @@ mod tests {
        // 2. Receive a message from Delta Chat when we did not send any messages before
        assert_eq!(
            msg_to_subject_str(
-                b"From: Charlie <charlie@example.org>\n\
-                To: alice@example.org\n\
+                b"From: Charlie <charlie@example.com>\n\
+                To: alice@example.com\n\
                Subject: Chat: hello\n\
                Chat-Version: 1.0\n\
-                Message-ID: <2223@example.org>\n\
+                Message-ID: <2223@example.com>\n\
                Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                \n\
                hello\n"
@@ -1343,10 +1342,11 @@ mod tests {
        );

        // 3. Send the first message to a new contact
-        let t = configured_offline_context().await;
-        assert_eq!(first_subject_str(t).await, "Message from alice@example.org");
+        let t = TestContext::new_alice().await;

-        let t = configured_offline_context().await;
+        assert_eq!(first_subject_str(t).await, "Message from alice@example.com");
+
+        let t = TestContext::new_alice().await;
        t.ctx
            .set_config(Config::Displayname, Some("Alice"))
            .await
@@ -1355,11 +1355,11 @@ mod tests {

        // 4. Receive messages with unicode characters and make sure that we do not panic (we do not care about the result)
        msg_to_subject_str(
-            "From: Charlie <charlie@example.org>\n\
-            To: alice@example.org\n\
+            "From: Charlie <charlie@example.com>\n\
+            To: alice@example.com\n\
            Subject: äääää\n\
            Chat-Version: 1.0\n\
-            Message-ID: <2893@example.org>\n\
+            Message-ID: <2893@example.com>\n\
            Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
            \n\
            hello\n"
@@ -1368,11 +1368,11 @@ mod tests {
        .await;

        msg_to_subject_str(
-            "From: Charlie <charlie@example.org>\n\
-            To: alice@example.org\n\
+            "From: Charlie <charlie@example.com>\n\
+            To: alice@example.com\n\
            Subject: aäääää\n\
            Chat-Version: 1.0\n\
-            Message-ID: <2893@example.org>\n\
+            Message-ID: <2893@example.com>\n\
            Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
            \n\
            hello\n"
@@ -1383,7 +1383,7 @@ mod tests {

    async fn first_subject_str(t: TestContext) -> String {
        let contact_id =
-            Contact::add_or_lookup(&t.ctx, "Dave", "dave@example.org", Origin::ManuallyCreated)
+            Contact::add_or_lookup(&t.ctx, "Dave", "dave@example.com", Origin::ManuallyCreated)
                .await
                .unwrap()
                .0;
@@ -1407,7 +1407,7 @@ mod tests {
    }

    async fn msg_to_subject_str(imf_raw: &[u8]) -> String {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        let new_msg = incoming_msg_to_reply_msg(imf_raw, &t.ctx).await;
        let mf = MimeFactory::from_msg(&t.ctx, &new_msg, false)
            .await
@@ -1445,15 +1445,15 @@ mod tests {
    #[async_std::test]
    // This test could still be extended
    async fn test_render_reply() {
-        let t = configured_offline_context().await;
+        let t = TestContext::new_alice().await;
        let context = &t.ctx;

        let msg = incoming_msg_to_reply_msg(
-            b"From: Charlie <charlie@example.org>\n\
-                To: alice@example.org\n\
+            b"From: Charlie <charlie@example.com>\n\
+                To: alice@example.com\n\
                Subject: Chat: hello\n\
                Chat-Version: 1.0\n\
-                Message-ID: <2223@example.org>\n\
+                Message-ID: <2223@example.com>\n\
                Date: Sun, 22 Mar 2020 22:37:56 +0000\n\
                \n\
                hello\n",
@@ -1464,7 +1464,7 @@ mod tests {
        let mimefactory = MimeFactory::from_msg(&t.ctx, &msg, false).await.unwrap();

        let recipients = mimefactory.recipients();
-        assert_eq!(recipients, vec!["charlie@example.org"]);
+        assert_eq!(recipients, vec!["charlie@example.com"]);

        let rendered_msg = mimefactory.render().await.unwrap();

--- a/src/mimeparser.rs
+++ b/src/mimeparser.rs
@@ -3,6 +3,7 @@ use std::future::Future;
 use std::pin::Pin;

 use deltachat_derive::{FromSql, ToSql};
+use lazy_static::lazy_static;
 use lettre_email::mime::{self, Mime};
 use mailparse::{addrparse_header, DispositionType, MailHeader, MailHeaderMap, SingleInfo};

@@ -53,7 +54,8 @@ pub struct MimeMessage {
    pub message_kml: Option<location::Kml>,
    pub(crate) user_avatar: Option<AvatarAction>,
    pub(crate) group_avatar: Option<AvatarAction>,
-    pub(crate) reports: Vec<Report>,
+    pub(crate) mdn_reports: Vec<Report>,
+    pub(crate) failure_report: Option<FailureReport>,
 }

 #[derive(Debug, PartialEq)]
@@ -176,14 +178,16 @@ impl MimeMessage {
            signatures,
            gossipped_addr,
            is_forwarded: false,
-            reports: Vec::new(),
+            mdn_reports: Vec::new(),
            is_system_message: SystemMessage::Unknown,
            location_kml: None,
            message_kml: None,
            user_avatar: None,
            group_avatar: None,
+            failure_report: None,
        };
        parser.parse_mime_recursive(context, &mail).await?;
+        parser.heuristically_parse_ndn(context).await;
        parser.parse_headers(context)?;

        Ok(parser)
@@ -253,7 +257,8 @@ impl MimeMessage {
                self.parts[0].msg = "".to_string();

                // swap new with old
-                std::mem::replace(&mut self.parts[0], filepart);
+                self.parts.push(filepart); // push to the end
+                let _ = self.parts.swap_remove(0); // drops first element, replacing it with the last one in O(1)
            }
        }
    }
@@ -353,7 +358,7 @@ impl MimeMessage {
        // just have send a message in the subject with an empty body.
        // Besides, we want to show something in case our incoming-processing
        // failed to properly handle an incoming message.
-        if self.parts.is_empty() && self.reports.is_empty() {
+        if self.parts.is_empty() && self.mdn_reports.is_empty() {
            let mut part = Part::default();
            part.typ = Viewtype::Text;

@@ -527,7 +532,7 @@ impl MimeMessage {
                part.typ = Viewtype::Text;
                part.msg_raw = Some(txt.clone());
                part.msg = txt;
-                part.param.set(Param::Error, "Decryption failed");
+                part.error = "Decryption failed".to_string();

                self.parts.push(part);

@@ -550,10 +555,10 @@ impl MimeMessage {
            (mime::MULTIPART, "report") => {
                /* RFC 6522: the first part is for humans, the second for machines */
                if mail.subparts.len() >= 2 {
-                    if let Some(report_type) = mail.ctype.params.get("report-type") {
-                        if report_type == "disposition-notification" {
+                    match mail.ctype.params.get("report-type").map(|s| s as &str) {
+                        Some("disposition-notification") => {
                            if let Some(report) = self.process_report(context, mail)? {
-                                self.reports.push(report);
+                                self.mdn_reports.push(report);
                            }

                            // Add MDN part so we can track it, avoid
@@ -565,9 +570,21 @@ impl MimeMessage {
                            self.parts.push(part);

                            any_part_added = true;
-                        } else {
-                            /* eg. `report-type=delivery-status`;
-                            maybe we should show them as a little error icon */
+                        }
+                        // Some providers, e.g. Tiscali, forget to set the report-type. So, if it's None, assume that it might be delivery-status
+                        Some("delivery-status") | None => {
+                            if let Some(report) = self.process_delivery_status(context, mail)? {
+                                self.failure_report = Some(report);
+                            }
+
+                            // Add all parts (we need another part, preferrably text/plain, to show as an error message)
+                            for cur_data in mail.subparts.iter() {
+                                if self.parse_mime_recursive(context, cur_data).await? {
+                                    any_part_added = true;
+                                }
+                            }
+                        }
+                        Some(_) => {
                            if let Some(first) = mail.subparts.iter().next() {
                                any_part_added = self.parse_mime_recursive(context, first).await?;
                            }
@@ -840,24 +857,118 @@ impl MimeMessage {
        Ok(None)
    }

-    /// Handle reports (only MDNs for now)
-    pub async fn handle_reports(&self, context: &Context, from_id: u32, sent_timestamp: i64) {
-        if self.reports.is_empty() {
-            return;
+    fn process_delivery_status(
+        &self,
+        context: &Context,
+        report: &mailparse::ParsedMail<'_>,
+    ) -> Result<Option<FailureReport>> {
+        // parse as mailheaders
+        if let Some(original_msg) = report
+            .subparts
+            .iter()
+            .find(|p| p.ctype.mimetype.contains("rfc822") || p.ctype.mimetype == "message/global")
+        {
+            let report_body = original_msg.get_body_raw()?;
+            let (report_fields, _) = mailparse::parse_headers(&report_body)?;
+
+            if let Some(original_message_id) = report_fields
+                .get_header_value(HeaderDef::MessageId)
+                .and_then(|v| parse_message_id(&v).ok())
+            {
+                let mut to_list = get_all_addresses_from_header(&report.headers, |header_key| {
+                    header_key == "x-failed-recipients"
+                });
+                let to = if to_list.len() == 1 {
+                    Some(to_list.pop().unwrap())
+                } else {
+                    None // We do not know which recipient failed
+                };
+
+                return Ok(Some(FailureReport {
+                    rfc724_mid: original_message_id,
+                    failed_recipient: to.map(|s| s.addr),
+                }));
+            }
+
+            warn!(
+                context,
+                "ignoring unknown ndn-notification, Message-Id: {:?}",
+                report_fields.get_header_value(HeaderDef::MessageId)
+            );
        }

-        for report in &self.reports {
+        Ok(None)
+    }
+
+    /// Some providers like GMX and Yahoo do not send standard NDNs (Non Delivery notifications).
+    /// If you improve heuristics here you might also have to change prefetch_should_download() in imap/mod.rs.
+    /// Also you should add a test in dc_receive_imf.rs (there already are lots of test_parse_ndn_* tests).
+    async fn heuristically_parse_ndn(&mut self, context: &Context) -> Option<()> {
+        let maybe_ndn = if let Some(from) = self.get(HeaderDef::From_) {
+            let from = from.to_ascii_lowercase();
+            from.contains("mailer-daemon") || from.contains("mail-daemon")
+        } else {
+            false
+        };
+        if maybe_ndn && self.failure_report.is_none() {
+            lazy_static! {
+                static ref RE: regex::Regex = regex::Regex::new(r"Message-ID:(.*)").unwrap();
+            }
+            for captures in self
+                .parts
+                .iter()
+                .filter_map(|part| part.msg_raw.as_ref())
+                .flat_map(|part| part.lines())
+                .filter_map(|line| RE.captures(line))
+            {
+                if let Ok(original_message_id) = parse_message_id(&captures[1]) {
+                    if let Ok(Some(_)) =
+                        message::rfc724_mid_exists(context, &original_message_id).await
+                    {
+                        self.failure_report = Some(FailureReport {
+                            rfc724_mid: original_message_id,
+                            failed_recipient: None,
+                        })
+                    }
+                }
+            }
+        }
+        None // Always return None, we just return anything so that we can use the '?' operator.
+    }
+
+    /// Handle reports
+    /// (MDNs = Message Disposition Notification, the message was read
+    /// and NDNs = Non delivery notification, the message could not be delivered)
+    pub async fn handle_reports(
+        &self,
+        context: &Context,
+        from_id: u32,
+        sent_timestamp: i64,
+        parts: &[Part],
+    ) {
+        for report in &self.mdn_reports {
            for original_message_id in
                std::iter::once(&report.original_message_id).chain(&report.additional_message_ids)
            {
                if let Some((chat_id, msg_id)) =
-                    message::mdn_from_ext(context, from_id, original_message_id, sent_timestamp)
-                        .await
+                    message::handle_mdn(context, from_id, original_message_id, sent_timestamp).await
                {
                    context.emit_event(Event::MsgRead { chat_id, msg_id });
                }
            }
        }
+
+        if let Some(failure_report) = &self.failure_report {
+            let error = parts.iter().find(|p| p.typ == Viewtype::Text).map(|p| {
+                let msg = &p.msg;
+                match msg.find("\n--- ") {
+                    Some(footer_start) => &msg[..footer_start],
+                    None => msg,
+                }
+                .trim()
+            });
+            message::handle_ndn(context, failure_report, error).await
+        }
    }
 }

@@ -914,6 +1025,12 @@ pub(crate) struct Report {
    additional_message_ids: Vec<String>,
 }

+#[derive(Debug)]
+pub(crate) struct FailureReport {
+    pub rfc724_mid: String,
+    pub failed_recipient: Option<String>,
+}
+
 pub(crate) fn parse_message_ids(ids: &str) -> Result<Vec<String>> {
    // take care with mailparse::msgidparse() that is pretty untolerant eg. wrt missing `<` or `>`
    let mut msgids = Vec::new();
@@ -957,6 +1074,7 @@ pub struct Part {
    pub bytes: usize,
    pub param: Params,
    org_filename: Option<String>,
+    pub error: String,
 }

 /// return mimetype and viewtype for a parsed mail
@@ -1119,7 +1237,7 @@ mod tests {

    #[async_std::test]
    async fn test_dc_mimeparser_crash() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = include_bytes!("../test-data/message/issue_523.txt");
        let mimeparser = MimeMessage::from_bytes(&context.ctx, &raw[..])
            .await
@@ -1131,7 +1249,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_rfc724_mid_exists() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = include_bytes!("../test-data/message/mail_with_message_id.txt");
        let mimeparser = MimeMessage::from_bytes(&context.ctx, &raw[..])
            .await
@@ -1145,7 +1263,7 @@ mod tests {

    #[async_std::test]
    async fn test_get_rfc724_mid_not_exists() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = include_bytes!("../test-data/message/issue_523.txt");
        let mimeparser = MimeMessage::from_bytes(&context.ctx, &raw[..])
            .await
@@ -1203,7 +1321,7 @@ mod tests {

    #[async_std::test]
    async fn test_parse_first_addr() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"From: hello@one.org, world@two.org\n\
                    Chat-Disposition-Notification-To: wrong\n\
                    Content-Type: text/plain\n\
@@ -1224,7 +1342,7 @@ mod tests {

    #[async_std::test]
    async fn test_mimeparser_with_context() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"From: hello\n\
                    Content-Type: multipart/mixed; boundary=\"==break==\";\n\
                    Subject: outer-subject\n\
@@ -1274,7 +1392,7 @@ mod tests {

    #[async_std::test]
    async fn test_mimeparser_with_avatars() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;

        let raw = include_bytes!("../test-data/message/mail_attach_txt.eml");
        let mimeparser = MimeMessage::from_bytes(&t.ctx, &raw[..]).await.unwrap();
@@ -1317,7 +1435,7 @@ mod tests {

    #[async_std::test]
    async fn test_mimeparser_message_kml() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"Chat-Version: 1.0\n\
 From: foo <foo@example.org>\n\
 To: bar <bar@example.org>\n\
@@ -1362,7 +1480,7 @@ Content-Disposition: attachment; filename=\"message.kml\"\n\

    #[async_std::test]
    async fn test_parse_mdn() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"Subject: =?utf-8?q?Chat=3A_Message_opened?=\n\
 Date: Mon, 10 Jan 2020 00:00:00 +0000\n\
 Chat-Version: 1.0\n\
@@ -1403,7 +1521,7 @@ Disposition: manual-action/MDN-sent-automatically; displayed\n\
        );

        assert_eq!(message.parts.len(), 1);
-        assert_eq!(message.reports.len(), 1);
+        assert_eq!(message.mdn_reports.len(), 1);
    }

    /// Test parsing multiple MDNs combined in a single message.
@@ -1412,7 +1530,7 @@ Disposition: manual-action/MDN-sent-automatically; displayed\n\
    /// multipart MIME messages.
    #[async_std::test]
    async fn test_parse_multiple_mdns() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"Subject: =?utf-8?q?Chat=3A_Message_opened?=\n\
 Date: Mon, 10 Jan 2020 00:00:00 +0000\n\
 Chat-Version: 1.0\n\
@@ -1483,12 +1601,12 @@ Disposition: manual-action/MDN-sent-automatically; displayed\n\
        );

        assert_eq!(message.parts.len(), 2);
-        assert_eq!(message.reports.len(), 2);
+        assert_eq!(message.mdn_reports.len(), 2);
    }

    #[async_std::test]
    async fn test_parse_mdn_with_additional_message_ids() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = b"Subject: =?utf-8?q?Chat=3A_Message_opened?=\n\
 Date: Mon, 10 Jan 2020 00:00:00 +0000\n\
 Chat-Version: 1.0\n\
@@ -1530,17 +1648,20 @@ Additional-Message-IDs: <foo@example.com> <foo@example.net>\n\
        );

        assert_eq!(message.parts.len(), 1);
-        assert_eq!(message.reports.len(), 1);
-        assert_eq!(message.reports[0].original_message_id, "foo@example.org");
+        assert_eq!(message.mdn_reports.len(), 1);
        assert_eq!(
-            &message.reports[0].additional_message_ids,
+            message.mdn_reports[0].original_message_id,
+            "foo@example.org"
+        );
+        assert_eq!(
+            &message.mdn_reports[0].additional_message_ids,
            &["foo@example.com", "foo@example.net"]
        );
    }

    #[async_std::test]
    async fn test_parse_inline_attachment() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = br#"Date: Thu, 13 Feb 2020 22:41:20 +0000 (UTC)
 From: sender@example.com
 To: receiver@example.com
@@ -1580,7 +1701,7 @@ MDYyMDYxNTE1RTlDOEE4Cj4+CnN0YXJ0eHJlZgo4Mjc4CiUlRU9GCg==

    #[async_std::test]
    async fn parse_inline_image() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = br#"Message-ID: <foobar@example.org>
 From: foo <foo@example.org>
 Subject: example
@@ -1626,7 +1747,7 @@ CWt6wx7fiLp0qS9RrX75g6Gqw7nfCs6EcBERcIPt7DTe8VStJwf3LWqVwxl4gQl46yhfoqwEO+I=

    #[async_std::test]
    async fn parse_thunderbird_html_embedded_image() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = br#"To: Alice <alice@example.org>
 From: Bob <bob@example.org>
 Subject: Test subject
@@ -1699,7 +1820,7 @@ CWt6wx7fiLp0qS9RrX75g6Gqw7nfCs6EcBERcIPt7DTe8VStJwf3LWqVwxl4gQl46yhfoqwEO+I=
    // Outlook specifies filename in the "name" attribute of Content-Type
    #[async_std::test]
    async fn parse_outlook_html_embedded_image() {
-        let context = dummy_context().await;
+        let context = TestContext::new().await;
        let raw = br##"From: Anonymous <anonymous@example.org>
 To: Anonymous <anonymous@example.org>
 Subject: Delta Chat is great stuff!
--- a/src/oauth2.rs
+++ b/src/oauth2.rs
@@ -1,12 +1,16 @@
 //! OAuth 2 module

+use regex::Regex;
 use std::collections::HashMap;

+use async_std_resolver::{config, resolver};
 use percent_encoding::{utf8_percent_encode, NON_ALPHANUMERIC};
 use serde::Deserialize;

 use crate::context::Context;
 use crate::dc_tools::*;
+use crate::provider;
+use crate::provider::Oauth2Authorizer;

 const OAUTH2_GMAIL: Oauth2 = Oauth2 {
    // see https://developers.google.com/identity/protocols/OAuth2InstalledApp
@@ -15,6 +19,7 @@ const OAUTH2_GMAIL: Oauth2 = Oauth2 {
    init_token: "https://accounts.google.com/o/oauth2/token?client_id=$CLIENT_ID&redirect_uri=$REDIRECT_URI&code=$CODE&grant_type=authorization_code",
    refresh_token: "https://accounts.google.com/o/oauth2/token?client_id=$CLIENT_ID&redirect_uri=$REDIRECT_URI&refresh_token=$REFRESH_TOKEN&grant_type=refresh_token",
    get_userinfo: Some("https://www.googleapis.com/oauth2/v1/userinfo?alt=json&access_token=$ACCESS_TOKEN"),
+    mx_pattern: Some(r"^aspmx\.l\.google\.com\.$"),
 };

 const OAUTH2_YANDEX: Oauth2 = Oauth2 {
@@ -24,8 +29,11 @@ const OAUTH2_YANDEX: Oauth2 = Oauth2 {
    init_token: "https://oauth.yandex.com/token?grant_type=authorization_code&code=$CODE&client_id=$CLIENT_ID&client_secret=58b8c6e94cf44fbe952da8511955dacf",
    refresh_token: "https://oauth.yandex.com/token?grant_type=refresh_token&refresh_token=$REFRESH_TOKEN&client_id=$CLIENT_ID&client_secret=58b8c6e94cf44fbe952da8511955dacf",
    get_userinfo: None,
+    mx_pattern: None,
 };

+const OAUTH2_PROVIDERS: [Oauth2; 1] = [OAUTH2_GMAIL];
+
 #[derive(Debug, Clone, PartialEq, Eq)]
 struct Oauth2 {
    client_id: &'static str,
@@ -33,6 +41,7 @@ struct Oauth2 {
    init_token: &'static str,
    refresh_token: &'static str,
    get_userinfo: Option<&'static str>,
+    mx_pattern: Option<&'static str>,
 }

 /// OAuth 2 Access Token Response
@@ -53,7 +62,7 @@ pub async fn dc_get_oauth2_url(
    addr: impl AsRef<str>,
    redirect_uri: impl AsRef<str>,
 ) -> Option<String> {
-    if let Some(oauth2) = Oauth2::from_address(addr) {
+    if let Some(oauth2) = Oauth2::from_address(addr).await {
        if context
            .sql
            .set_raw_config(
@@ -81,7 +90,7 @@ pub async fn dc_get_oauth2_access_token(
    code: impl AsRef<str>,
    regenerate: bool,
 ) -> Option<String> {
-    if let Some(oauth2) = Oauth2::from_address(addr) {
+    if let Some(oauth2) = Oauth2::from_address(addr).await {
        let lock = context.oauth2_mutex.lock().await;

        // read generated token
@@ -239,7 +248,7 @@ pub async fn dc_get_oauth2_addr(
    addr: impl AsRef<str>,
    code: impl AsRef<str>,
 ) -> Option<String> {
-    let oauth2 = Oauth2::from_address(addr.as_ref())?;
+    let oauth2 = Oauth2::from_address(addr.as_ref()).await?;
    oauth2.get_userinfo?;

    if let Some(access_token) =
@@ -263,23 +272,56 @@ pub async fn dc_get_oauth2_addr(
 }

 impl Oauth2 {
-    fn from_address(addr: impl AsRef<str>) -> Option<Self> {
+    async fn from_address(addr: impl AsRef<str>) -> Option<Self> {
        let addr_normalized = normalize_addr(addr.as_ref());
        if let Some(domain) = addr_normalized
            .find('@')
            .map(|index| addr_normalized.split_at(index + 1).1)
        {
-            match domain {
-                "gmail.com" | "googlemail.com" => Some(OAUTH2_GMAIL),
-                "yandex.com" | "yandex.by" | "yandex.kz" | "yandex.ru" | "yandex.ua" | "ya.ru"
-                | "narod.ru" => Some(OAUTH2_YANDEX),
-                _ => None,
+            if let Some(provider) = provider::get_provider_info(&addr_normalized) {
+                match &provider.oauth2_authorizer {
+                    Some(Oauth2Authorizer::Gmail) => Some(OAUTH2_GMAIL),
+                    Some(Oauth2Authorizer::Yandex) => Some(OAUTH2_YANDEX),
+                    None => None, // provider known to not support oauth2, no mx-lookup required
+                }
+            } else {
+                Oauth2::lookup_mx(domain).await
            }
        } else {
            None
        }
    }

+    async fn lookup_mx(domain: impl AsRef<str>) -> Option<Self> {
+        if let Ok(resolver) = resolver(
+            config::ResolverConfig::default(),
+            config::ResolverOpts::default(),
+        )
+        .await
+        {
+            for provider in OAUTH2_PROVIDERS.iter() {
+                if let Some(pattern) = provider.mx_pattern {
+                    let re = Regex::new(pattern).unwrap();
+
+                    let mut fqdn: String = String::from(domain.as_ref());
+                    if !fqdn.ends_with('.') {
+                        fqdn.push_str(".");
+                    }
+
+                    if let Ok(res) = resolver.mx_lookup(fqdn).await {
+                        for rr in res.iter() {
+                            if re.is_match(&rr.exchange().to_lowercase().to_utf8()) {
+                                return Some(provider.clone());
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        None
+    }
+
    async fn get_addr(&self, context: &Context, access_token: impl AsRef<str>) -> Option<String> {
        let userinfo_url = self.get_userinfo.unwrap_or_else(|| "");
        let userinfo_url = replace_in_uri(&userinfo_url, "$ACCESS_TOKEN", access_token);
@@ -362,25 +404,39 @@ mod tests {
        );
    }

-    #[test]
-    fn test_oauth_from_address() {
-        assert_eq!(Oauth2::from_address("hello@gmail.com"), Some(OAUTH2_GMAIL));
+    #[async_std::test]
+    async fn test_oauth_from_address() {
        assert_eq!(
-            Oauth2::from_address("hello@googlemail.com"),
+            Oauth2::from_address("hello@gmail.com").await,
            Some(OAUTH2_GMAIL)
        );
        assert_eq!(
-            Oauth2::from_address("hello@yandex.com"),
+            Oauth2::from_address("hello@googlemail.com").await,
+            Some(OAUTH2_GMAIL)
+        );
+        assert_eq!(
+            Oauth2::from_address("hello@yandex.com").await,
+            Some(OAUTH2_YANDEX)
+        );
+        assert_eq!(
+            Oauth2::from_address("hello@yandex.ru").await,
            Some(OAUTH2_YANDEX)
        );
-        assert_eq!(Oauth2::from_address("hello@yandex.ru"), Some(OAUTH2_YANDEX));

-        assert_eq!(Oauth2::from_address("hello@web.de"), None);
+        assert_eq!(Oauth2::from_address("hello@web.de").await, None);
+    }
+
+    #[async_std::test]
+    async fn test_oauth_from_mx() {
+        assert_eq!(
+            Oauth2::from_address("hello@google.com").await,
+            Some(OAUTH2_GMAIL)
+        );
    }

    #[async_std::test]
    async fn test_dc_get_oauth2_addr() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;
        let addr = "dignifiedquire@gmail.com";
        let code = "fail";
        let res = dc_get_oauth2_addr(&ctx.ctx, addr, code).await;
@@ -390,7 +446,7 @@ mod tests {

    #[async_std::test]
    async fn test_dc_get_oauth2_url() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;
        let addr = "dignifiedquire@gmail.com";
        let redirect_uri = "chat.delta:/com.b44t.messenger";
        let res = dc_get_oauth2_url(&ctx.ctx, addr, redirect_uri).await;
@@ -400,7 +456,7 @@ mod tests {

    #[async_std::test]
    async fn test_dc_get_oauth2_token() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;
        let addr = "dignifiedquire@gmail.com";
        let code = "fail";
        let res = dc_get_oauth2_access_token(&ctx.ctx, addr, code, false).await;
--- a/src/param.rs
+++ b/src/param.rs
@@ -65,9 +65,6 @@ pub enum Param {
    /// For Messages
    Arg4 = b'H',

-    /// For Messages
-    Error = b'L',
-
    /// For Messages
    AttachGroupImage = b'A',

@@ -417,7 +414,7 @@ mod tests {

    #[async_std::test]
    async fn test_params_file_fs_path() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        if let ParamsFile::FsPath(p) = ParamsFile::from_param(&t.ctx, "/foo/bar/baz").unwrap() {
            assert_eq!(p, Path::new("/foo/bar/baz"));
        } else {
@@ -427,7 +424,7 @@ mod tests {

    #[async_std::test]
    async fn test_params_file_blob() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        if let ParamsFile::Blob(b) = ParamsFile::from_param(&t.ctx, "$BLOBDIR/foo").unwrap() {
            assert_eq!(b.as_name(), "$BLOBDIR/foo");
        } else {
@@ -438,7 +435,7 @@ mod tests {
    // Tests for Params::get_file(), Params::get_path() and Params::get_blob().
    #[async_std::test]
    async fn test_params_get_fileparam() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let fname = t.dir.path().join("foo");
        let mut p = Params::new();
        p.set(Param::File, fname.to_str().unwrap());
--- a/src/peerstate.rs
+++ b/src/peerstate.rs
@@ -450,14 +450,11 @@ impl<'a> Peerstate<'a> {
    }

    pub fn has_verified_key(&self, fingerprints: &HashSet<Fingerprint>) -> bool {
-        if self.verified_key.is_some() && self.verified_key_fingerprint.is_some() {
-            let vkc = self.verified_key_fingerprint.as_ref().unwrap();
-            if fingerprints.contains(vkc) {
-                return true;
-            }
+        if let Some(vkc) = &self.verified_key_fingerprint {
+            fingerprints.contains(vkc) && self.verified_key.is_some()
+        } else {
+            false
        }
-
-        false
    }
 }

@@ -476,7 +473,7 @@ mod tests {

    #[async_std::test]
    async fn test_peerstate_save_to_db() {
-        let ctx = crate::test_utils::dummy_context().await;
+        let ctx = crate::test_utils::TestContext::new().await;
        let addr = "hello@mail.com";

        let pub_key = alice_keypair().public;
@@ -519,7 +516,7 @@ mod tests {

    #[async_std::test]
    async fn test_peerstate_double_create() {
-        let ctx = crate::test_utils::dummy_context().await;
+        let ctx = crate::test_utils::TestContext::new().await;
        let addr = "hello@mail.com";
        let pub_key = alice_keypair().public;

@@ -552,7 +549,7 @@ mod tests {

    #[async_std::test]
    async fn test_peerstate_with_empty_gossip_key_save_to_db() {
-        let ctx = crate::test_utils::dummy_context().await;
+        let ctx = crate::test_utils::TestContext::new().await;
        let addr = "hello@mail.com";

        let pub_key = alice_keypair().public;
--- a/src/pgp.rs
+++ b/src/pgp.rs
@@ -272,6 +272,14 @@ pub async fn pk_encrypt(
    .await
 }

+/// Decrypts the message with keys from the private key keyring.
+///
+/// Receiver private keys are provided in
+/// `private_keys_for_decryption`.
+///
+/// If `ret_signature_fingerprints` is not `None`, stores fingerprints
+/// of all keys from the `public_keys_for_validation` keyring that
+/// have valid signatures there.
 #[allow(clippy::implicit_hasher)]
 pub async fn pk_decrypt(
    ctext: Vec<u8>,
@@ -290,36 +298,41 @@ pub async fn pk_decrypt(
    })
    .await?;

-    ensure!(!msgs.is_empty(), "No valid messages found");
+    if let Some(msg) = msgs.into_iter().next() {
+        // get_content() will decompress the message if needed,
+        // but this avoids decompressing it again to check signatures
+        let msg = msg.decompress()?;

-    let content = match msgs[0].get_content()? {
-        Some(content) => content,
-        None => bail!("Decrypted message is empty"),
-    };
+        let content = match msg.get_content()? {
+            Some(content) => content,
+            None => bail!("The decrypted message is empty"),
+        };

-    if let Some(ret_signature_fingerprints) = ret_signature_fingerprints {
-        if !public_keys_for_validation.is_empty() {
-            let fingerprints = async_std::task::spawn_blocking(move || {
-                let dec_msg = &msgs[0];
+        if let Some(ret_signature_fingerprints) = ret_signature_fingerprints {
+            if !public_keys_for_validation.is_empty() {
+                let fingerprints = async_std::task::spawn_blocking(move || {
+                    let pkeys = public_keys_for_validation.keys();

-                let pkeys = public_keys_for_validation.keys();
-
-                let mut fingerprints: Vec<Fingerprint> = Vec::new();
-                for pkey in pkeys {
-                    if dec_msg.verify(&pkey.primary_key).is_ok() {
-                        let fp = DcKey::fingerprint(pkey);
-                        fingerprints.push(fp);
+                    let mut fingerprints: Vec<Fingerprint> = Vec::new();
+                    if let signed_msg @ pgp::composed::Message::Signed { .. } = msg {
+                        for pkey in pkeys {
+                            if signed_msg.verify(&pkey.primary_key).is_ok() {
+                                let fp = DcKey::fingerprint(pkey);
+                                fingerprints.push(fp);
+                            }
+                        }
                    }
-                }
-                fingerprints
-            })
-            .await;
+                    fingerprints
+                })
+                .await;

-            ret_signature_fingerprints.extend(fingerprints);
+                ret_signature_fingerprints.extend(fingerprints);
+            }
        }
+        Ok(content)
+    } else {
+        bail!("No valid messages found");
    }
-
-    Ok(content)
 }

 /// Symmetric encryption.
--- a/src/provider/data.rs
+++ b/src/provider/data.rs
@@ -20,6 +20,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // aol.md: aol.com
@@ -32,6 +33,22 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
+    };
+
+    // arcor.de.md: arcor.de
+    static ref P_ARCOR_DE: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/arcor-de",
+        server: vec![
+            Server { protocol: IMAP, socket: SSL, hostname: "imap.arcor.de", port: 993, username_pattern: EMAIL },
+            Server { protocol: SMTP, socket: SSL, hostname: "mail.arcor.de", port: 465, username_pattern: EMAIL },
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // autistici.org.md: autistici.org
@@ -46,6 +63,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // bluewin.ch.md: bluewin.ch
@@ -60,6 +78,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // chello.at.md: chello.at
@@ -74,13 +93,34 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // comcast.md: xfinity.com, comcast.net
-    // - skipping provider with status OK and no special things to do
+    static ref P_COMCAST: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/comcast",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // dismail.de.md: dismail.de
-    // - skipping provider with status OK and no special things to do
+    static ref P_DISMAIL_DE: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/dismail-de",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // disroot.md: disroot.org
    static ref P_DISROOT: Provider = Provider {
@@ -92,6 +132,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // example.com.md: example.com, example.org
@@ -106,6 +147,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // fastmail.md: fastmail.com
@@ -118,6 +160,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // five.chat.md: five.chat
@@ -130,6 +173,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // freenet.de.md: freenet.de
@@ -144,6 +188,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // gmail.md: gmail.com, googlemail.com
@@ -158,6 +203,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: Some(Oauth2Authorizer::Gmail),
    };

    // gmx.net.md: gmx.net, gmx.de, gmx.at, gmx.ch, gmx.org, gmx.eu, gmx.info, gmx.biz, gmx.com
@@ -173,10 +219,21 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // i.ua.md: i.ua
-    // - skipping provider with status OK and no special things to do
+    static ref P_I_UA: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/i-ua",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // icloud.md: icloud.com, me.com, mac.com
    static ref P_ICLOUD: Provider = Provider {
@@ -190,16 +247,47 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // kolst.com.md: kolst.com
-    // - skipping provider with status OK and no special things to do
+    static ref P_KOLST_COM: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/kolst-com",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // kontent.com.md: kontent.com
-    // - skipping provider with status OK and no special things to do
+    static ref P_KONTENT_COM: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/kontent-com",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // mail.ru.md: mail.ru, inbox.ru, bk.ru, list.ru
-    // - skipping provider with status OK and no special things to do
+    static ref P_MAIL_RU: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/mail-ru",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // mailbox.org.md: mailbox.org, secure.mailbox.org
    static ref P_MAILBOX_ORG: Provider = Provider {
@@ -211,6 +299,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // nauta.cu.md: nauta.cu
@@ -233,6 +322,7 @@ lazy_static::lazy_static! {
            ConfigDefault { key: Config::MediaQuality, value: "1" },
        ]),
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // outlook.com.md: hotmail.com, outlook.com, office365.com, outlook.com.tr, live.com
@@ -247,6 +337,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // posteo.md: posteo.de, posteo.af, posteo.at, posteo.be, posteo.ch, posteo.cl, posteo.co, posteo.co.uk, posteo.com.br, posteo.cr, posteo.cz, posteo.dk, posteo.ee, posteo.es, posteo.eu, posteo.fi, posteo.gl, posteo.gr, posteo.hn, posteo.hr, posteo.hu, posteo.ie, posteo.in, posteo.is, posteo.jp, posteo.la, posteo.li, posteo.lt, posteo.lu, posteo.me, posteo.mx, posteo.my, posteo.net, posteo.nl, posteo.no, posteo.nz, posteo.org, posteo.pe, posteo.pl, posteo.pm, posteo.pt, posteo.ro, posteo.ru, posteo.se, posteo.sg, posteo.si, posteo.tn, posteo.uk, posteo.us
@@ -261,6 +352,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // protonmail.md: protonmail.com, protonmail.ch
@@ -273,6 +365,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // riseup.net.md: riseup.net
@@ -285,10 +378,21 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // rogers.com.md: rogers.com
-    // - skipping provider with status OK and no special things to do
+    static ref P_ROGERS_COM: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/rogers-com",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // systemli.org.md: systemli.org
    static ref P_SYSTEMLI_ORG: Provider = Provider {
@@ -300,6 +404,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // t-online.md: t-online.de, magenta.de
@@ -312,6 +417,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // testrun.md: testrun.org
@@ -327,6 +433,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: None,
    };

    // tiscali.it.md: tiscali.it
@@ -341,13 +448,34 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // ukr.net.md: ukr.net
-    // - skipping provider with status OK and no special things to do
+    static ref P_UKR_NET: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/ukr-net",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // vfemail.md: vfemail.net
-    // - skipping provider with status OK and no special things to do
+    static ref P_VFEMAIL: Provider = Provider {
+        status: Status::OK,
+        before_login_hint: "",
+        after_login_hint: "",
+        overview_page: "https://providers.delta.chat/vfemail",
+        server: vec![
+        ],
+        config_defaults: None,
+        strict_tls: false,
+        oauth2_authorizer: None,
+    };

    // web.de.md: web.de, email.de, flirt.ms, hallo.ms, kuss.ms, love.ms, magic.ms, singles.ms, cool.ms, kanzler.ms, okay.ms, party.ms, pop.ms, stars.ms, techno.ms, clever.ms, deutschland.ms, genial.ms, ich.ms, online.ms, smart.ms, wichtig.ms, action.ms, fussball.ms, joker.ms, planet.ms, power.ms
    static ref P_WEB_DE: Provider = Provider {
@@ -362,6 +490,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    // yahoo.md: yahoo.com, yahoo.de, yahoo.it, yahoo.fr, yahoo.es, yahoo.se, yahoo.co.uk, yahoo.co.nz, yahoo.com.au, yahoo.com.ar, yahoo.com.br, yahoo.com.mx, ymail.com, rocketmail.com, yahoodns.net
@@ -376,9 +505,10 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

-    // yandex.ru.md: yandex.ru, yandex.com
+    // yandex.ru.md: yandex.com, yandex.by, yandex.kz, yandex.ru, yandex.ua, ya.ru, narod.ru
    static ref P_YANDEX_RU: Provider = Provider {
        status: Status::PREPARATION,
        before_login_hint: "For Yandex accounts, you have to set IMAP protocol option turned on.",
@@ -388,6 +518,7 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: true,
+        oauth2_authorizer: Some(Oauth2Authorizer::Yandex),
    };

    // ziggo.nl.md: ziggo.nl
@@ -402,14 +533,19 @@ lazy_static::lazy_static! {
        ],
        config_defaults: None,
        strict_tls: false,
+        oauth2_authorizer: None,
    };

    pub static ref PROVIDER_DATA: HashMap<&'static str, &'static Provider> = [
        ("aktivix.org", &*P_AKTIVIX_ORG),
        ("aol.com", &*P_AOL),
+        ("arcor.de", &*P_ARCOR_DE),
        ("autistici.org", &*P_AUTISTICI_ORG),
        ("bluewin.ch", &*P_BLUEWIN_CH),
        ("chello.at", &*P_CHELLO_AT),
+        ("xfinity.com", &*P_COMCAST),
+        ("comcast.net", &*P_COMCAST),
+        ("dismail.de", &*P_DISMAIL_DE),
        ("disroot.org", &*P_DISROOT),
        ("example.com", &*P_EXAMPLE_COM),
        ("example.org", &*P_EXAMPLE_COM),
@@ -427,9 +563,16 @@ lazy_static::lazy_static! {
        ("gmx.info", &*P_GMX_NET),
        ("gmx.biz", &*P_GMX_NET),
        ("gmx.com", &*P_GMX_NET),
+        ("i.ua", &*P_I_UA),
        ("icloud.com", &*P_ICLOUD),
        ("me.com", &*P_ICLOUD),
        ("mac.com", &*P_ICLOUD),
+        ("kolst.com", &*P_KOLST_COM),
+        ("kontent.com", &*P_KONTENT_COM),
+        ("mail.ru", &*P_MAIL_RU),
+        ("inbox.ru", &*P_MAIL_RU),
+        ("bk.ru", &*P_MAIL_RU),
+        ("list.ru", &*P_MAIL_RU),
        ("mailbox.org", &*P_MAILBOX_ORG),
        ("secure.mailbox.org", &*P_MAILBOX_ORG),
        ("nauta.cu", &*P_NAUTA_CU),
@@ -490,11 +633,14 @@ lazy_static::lazy_static! {
        ("protonmail.com", &*P_PROTONMAIL),
        ("protonmail.ch", &*P_PROTONMAIL),
        ("riseup.net", &*P_RISEUP_NET),
+        ("rogers.com", &*P_ROGERS_COM),
        ("systemli.org", &*P_SYSTEMLI_ORG),
        ("t-online.de", &*P_T_ONLINE),
        ("magenta.de", &*P_T_ONLINE),
        ("testrun.org", &*P_TESTRUN),
        ("tiscali.it", &*P_TISCALI_IT),
+        ("ukr.net", &*P_UKR_NET),
+        ("vfemail.net", &*P_VFEMAIL),
        ("web.de", &*P_WEB_DE),
        ("email.de", &*P_WEB_DE),
        ("flirt.ms", &*P_WEB_DE),
@@ -537,8 +683,13 @@ lazy_static::lazy_static! {
        ("ymail.com", &*P_YAHOO),
        ("rocketmail.com", &*P_YAHOO),
        ("yahoodns.net", &*P_YAHOO),
-        ("yandex.ru", &*P_YANDEX_RU),
        ("yandex.com", &*P_YANDEX_RU),
+        ("yandex.by", &*P_YANDEX_RU),
+        ("yandex.kz", &*P_YANDEX_RU),
+        ("yandex.ru", &*P_YANDEX_RU),
+        ("yandex.ua", &*P_YANDEX_RU),
+        ("ya.ru", &*P_YANDEX_RU),
+        ("narod.ru", &*P_YANDEX_RU),
        ("ziggo.nl", &*P_ZIGGO_NL),
    ].iter().copied().collect();
 }
--- a/src/provider/mod.rs
+++ b/src/provider/mod.rs
@@ -35,6 +35,13 @@ pub enum UsernamePattern {
    EMAILLOCALPART = 2,
 }

+#[derive(Debug, PartialEq)]
+#[repr(u8)]
+pub enum Oauth2Authorizer {
+    Yandex = 1,
+    Gmail = 2,
+}
+
 #[derive(Debug)]
 pub struct Server {
    pub protocol: Protocol,
@@ -73,6 +80,7 @@ pub struct Provider {
    pub server: Vec<Server>,
    pub config_defaults: Option<Vec<ConfigDefault>>,
    pub strict_tls: bool,
+    pub oauth2_authorizer: Option<Oauth2Authorizer>,
 }

 impl Provider {
--- a/src/provider/update.py
+++ b/src/provider/update.py
@@ -103,6 +103,9 @@ def process_data(data, file):
    strict_tls = data.get("strict_tls", False)
    strict_tls = "true" if strict_tls else "false"

+    oauth2 = data.get("oauth2", "")
+    oauth2 = "Some(Oauth2Authorizer::" + camel(oauth2) + ")" if oauth2 != "" else "None"
+
    provider = ""
    before_login_hint = cleanstr(data.get("before_login_hint", ""))
    after_login_hint = cleanstr(data.get("after_login_hint", ""))
@@ -115,6 +118,7 @@ def process_data(data, file):
        provider += "        server: vec![\n" + server + "        ],\n"
        provider += "        config_defaults: " + config_defaults + ",\n"
        provider += "        strict_tls: " + strict_tls + ",\n"
+        provider += "        oauth2_authorizer: " + oauth2 + ",\n"
        provider += "    };\n\n"
    else:
        raise TypeError("SMTP and IMAP must be specified together or left out both")
@@ -125,11 +129,11 @@ def process_data(data, file):
    # finally, add the provider
    global out_all, out_domains
    out_all += "    // " + file[file.rindex("/")+1:] + ": " + comment.strip(", ") + "\n"
-    if status == "OK" and before_login_hint == "" and after_login_hint == "" and server == "" and config_defaults == "None" and strict_tls == "false":
-        out_all += "    // - skipping provider with status OK and no special things to do\n\n"
-    else:
-        out_all += provider
-        out_domains += domains
+
+    # also add provider with no special things to do -
+    # eg. _not_ supporting oauth2 is also an information and we can skip the mx-lookup in this case
+    out_all += provider
+    out_domains += domains


 def process_file(file):
--- a/src/qr.rs
+++ b/src/qr.rs
@@ -383,11 +383,11 @@ fn normalize_address(addr: &str) -> Result<String, Error> {
 mod tests {
    use super::*;

-    use crate::test_utils::dummy_context;
+    use crate::test_utils::TestContext;

    #[async_std::test]
    async fn test_decode_http() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(&ctx.ctx, "http://www.hello.com").await;

@@ -399,7 +399,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_https() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(&ctx.ctx, "https://www.hello.com").await;

@@ -411,7 +411,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_text() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(&ctx.ctx, "I am so cool").await;

@@ -423,7 +423,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_vcard() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -441,7 +441,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_matmsg() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -459,7 +459,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_mailto() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -485,7 +485,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_smtp() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(&ctx.ctx, "SMTP:stress@test.local:subjecthello:bodyworld").await;

@@ -499,7 +499,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_openpgp_group() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -528,7 +528,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_openpgp_secure_join() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -556,7 +556,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_openpgp_without_addr() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -591,7 +591,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_account() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;

        let res = check_qr(
            &ctx.ctx,
@@ -613,7 +613,7 @@ mod tests {

    #[async_std::test]
    async fn test_decode_account_bad_scheme() {
-        let ctx = dummy_context().await;
+        let ctx = TestContext::new().await;
        let res = check_qr(
            &ctx.ctx,
            "DCACCOUNT:http://example.org/new_email?t=1w_7wDjgjelxeX884x96v3",
--- a/src/scheduler.rs
+++ b/src/scheduler.rs
@@ -1,3 +1,5 @@
+#![warn(clippy::indexing_slicing)]
+
 use async_std::prelude::*;
 use async_std::sync::{channel, Receiver, Sender};
 use async_std::task;
--- a/src/securejoin.rs
+++ b/src/securejoin.rs
@@ -114,7 +114,7 @@ pub async fn dc_get_securejoin_qr(context: &Context, group_chat_id: ChatId) -> O

            Some(format!(
                "OPENPGP4FPR:{}#a={}&g={}&x={}&i={}&s={}",
-                fingerprint,
+                fingerprint.hex(),
                self_addr_urlencoded,
                &group_name_urlencoded,
                &chat.grpid,
@@ -129,7 +129,11 @@ pub async fn dc_get_securejoin_qr(context: &Context, group_chat_id: ChatId) -> O
        // parameters used: a=n=i=s=
        Some(format!(
            "OPENPGP4FPR:{}#a={}&n={}&i={}&s={}",
-            fingerprint, self_addr_urlencoded, self_name_urlencoded, &invitenumber, &auth,
+            fingerprint.hex(),
+            self_addr_urlencoded,
+            self_name_urlencoded,
+            &invitenumber,
+            &auth,
        ))
    };

--- a/src/smtp/mod.rs
+++ b/src/smtp/mod.rs
@@ -1,5 +1,7 @@
 //! # SMTP transport module

+#![forbid(clippy::indexing_slicing)]
+
 pub mod send;

 use std::time::{Duration, Instant};
--- a/src/sql.rs
+++ b/src/sql.rs
@@ -1241,6 +1241,15 @@ async fn open(
                .await?;
            sql.set_raw_config_int(context, "dbversion", 63).await?;
        }
+        if dbversion < 64 {
+            info!(context, "[migration] v64");
+            sql.execute(
+                "ALTER TABLE msgs ADD COLUMN error TEXT DEFAULT '';",
+                paramsv![],
+            )
+            .await?;
+            sql.set_raw_config_int(context, "dbversion", 64).await?;
+        }

        // (2) updates that require high-level objects
        // (the structure is complete now and all objects are usable)
--- a/src/stock.rs
+++ b/src/stock.rs
@@ -182,6 +182,9 @@ pub enum StockMessage {

    #[strum(props(fallback = "Message from %1$s"))]
    SubjectForNewContact = 73,
+
+    #[strum(props(fallback = "Failed to send message to %1$s."))]
+    FailedSendingTo = 74,
 }

 /*
@@ -406,7 +409,7 @@ mod tests {

    #[async_std::test]
    async fn test_set_stock_translation() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx
            .set_stock_translation(StockMessage::NoMessages, "xyz".to_string())
            .await
@@ -416,7 +419,7 @@ mod tests {

    #[async_std::test]
    async fn test_set_stock_translation_wrong_replacements() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert!(t
            .ctx
            .set_stock_translation(StockMessage::NoMessages, "xyz %1$s ".to_string())
@@ -431,7 +434,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_str() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx.stock_str(StockMessage::NoMessages).await,
            "No messages."
@@ -440,7 +443,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_string_repl_str() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        // uses %1$s substitution
        assert_eq!(
            t.ctx
@@ -453,7 +456,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_string_repl_int() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx
                .stock_string_repl_int(StockMessage::MsgAddMember, 42)
@@ -464,7 +467,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_string_repl_str2() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx
                .stock_string_repl_str2(StockMessage::ServerResponse, "foo", "bar")
@@ -475,7 +478,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_simple() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx
                .stock_system_msg(StockMessage::MsgLocationEnabled, "", "", 0)
@@ -486,7 +489,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_add_member_by_me() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx
                .stock_system_msg(
@@ -502,7 +505,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_add_member_by_me_with_displayname() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        Contact::create(&t.ctx, "Alice", "alice@example.com")
            .await
            .expect("failed to create contact");
@@ -521,7 +524,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_add_member_by_other_with_displayname() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let contact_id = {
            Contact::create(&t.ctx, "Alice", "alice@example.com")
                .await
@@ -545,7 +548,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_grp_name() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        assert_eq!(
            t.ctx
                .stock_system_msg(
@@ -561,7 +564,7 @@ mod tests {

    #[async_std::test]
    async fn test_stock_system_msg_grp_name_other() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        let id = Contact::create(&t.ctx, "Alice", "alice@example.com")
            .await
            .expect("failed to create contact");
@@ -576,7 +579,7 @@ mod tests {

    #[async_std::test]
    async fn test_update_device_chats() {
-        let t = dummy_context().await;
+        let t = TestContext::new().await;
        t.ctx.update_device_chats().await.ok();
        let chats = Chatlist::try_load(&t.ctx, 0, None, None).await.unwrap();
        assert_eq!(chats.len(), 2);
--- a/src/test_utils.rs
+++ b/src/test_utils.rs
@@ -18,43 +18,59 @@ pub(crate) struct TestContext {
    pub dir: TempDir,
 }

-/// Create a new, opened [TestContext] using given callback.
-///
-/// The [Context] will be opened with the SQLite database named
-/// "db.sqlite" in the [TestContext.dir] directory.
-///
-/// [Context]: crate::context::Context
-pub(crate) async fn test_context() -> TestContext {
-    let dir = tempdir().unwrap();
-    let dbfile = dir.path().join("db.sqlite");
-    let ctx = Context::new("FakeOs".into(), dbfile.into()).await.unwrap();
-    TestContext { ctx, dir }
-}
+impl TestContext {
+    /// Create a new [TestContext].
+    ///
+    /// The [Context] will be created and have an SQLite database named "db.sqlite" in the
+    /// [TestContext.dir] directory.  This directory is cleaned up when the [TestContext] is
+    /// dropped.
+    ///
+    /// [Context]: crate::context::Context
+    pub async fn new() -> Self {
+        let dir = tempdir().unwrap();
+        let dbfile = dir.path().join("db.sqlite");
+        let ctx = Context::new("FakeOS".into(), dbfile.into()).await.unwrap();
+        Self { ctx, dir }
+    }

-/// Return a dummy [TestContext].
-///
-/// The context will be opened and use the SQLite database as
-/// specified in [test_context] but there is no callback hooked up,
-/// i.e. [Context::call_cb] will always return `0`.
-pub(crate) async fn dummy_context() -> TestContext {
-    test_context().await
-}
+    /// Create a new configured [TestContext].
+    ///
+    /// This is a shortcut which automatically calls [TestContext::configure_alice] after
+    /// creating the context.
+    pub async fn new_alice() -> Self {
+        let t = Self::new().await;
+        t.configure_alice().await;
+        t
+    }

-pub(crate) async fn configured_offline_context() -> TestContext {
-    let t = dummy_context().await;
-    t.ctx
-        .set_config(Config::Addr, Some("alice@example.org"))
-        .await
-        .unwrap();
-    t.ctx
-        .set_config(Config::ConfiguredAddr, Some("alice@example.org"))
-        .await
-        .unwrap();
-    t.ctx
-        .set_config(Config::Configured, Some("1"))
-        .await
-        .unwrap();
-    t
+    /// Configure with alice@example.com.
+    ///
+    /// The context will be fake-configured as the alice user, with a pre-generated secret
+    /// key.  The email address of the user is returned as a string.
+    pub async fn configure_alice(&self) -> String {
+        let keypair = alice_keypair();
+        self.configure_addr(&keypair.addr.to_string()).await;
+        key::store_self_keypair(&self.ctx, &keypair, key::KeyPairUse::Default)
+            .await
+            .expect("Failed to save Alice's key");
+        keypair.addr.to_string()
+    }
+
+    /// Configure as a given email address.
+    ///
+    /// The context will be configured but the key will not be pre-generated so if a key is
+    /// used the fingerprint will be different every time.
+    pub async fn configure_addr(&self, addr: &str) {
+        self.ctx.set_config(Config::Addr, Some(addr)).await.unwrap();
+        self.ctx
+            .set_config(Config::ConfiguredAddr, Some(addr))
+            .await
+            .unwrap();
+        self.ctx
+            .set_config(Config::Configured, Some("1"))
+            .await
+            .unwrap();
+    }
 }

 /// Load a pre-generated keypair for alice@example.com from disk.
@@ -77,20 +93,6 @@ pub(crate) fn alice_keypair() -> key::KeyPair {
    }
 }

-/// Creates Alice with a pre-generated keypair.
-///
-/// Returns the address of the keypair created (alice@example.com).
-pub(crate) async fn configure_alice_keypair(ctx: &Context) -> String {
-    let keypair = alice_keypair();
-    ctx.set_config(Config::ConfiguredAddr, Some(&keypair.addr.to_string()))
-        .await
-        .unwrap();
-    key::store_self_keypair(&ctx, &keypair, key::KeyPairUse::Default)
-        .await
-        .expect("Failed to save Alice's key");
-    keypair.addr.to_string()
-}
-
 /// Load a pre-generated keypair for bob@example.net from disk.
 ///
 /// Like [alice_keypair] but a different key and identity.
--- a/test-data/message/gmail_ndn.eml
+++ b/test-data/message/gmail_ndn.eml
@@ -0,0 +1,242 @@
+Delivered-To: alice@gmail.com
+Received: by 2002:a1c:b4d7:0:0:0:0:0 with SMTP id d206csp3026053wmf;
+        Mon, 18 May 2020 09:23:25 -0700 (PDT)
+X-Received: by 2002:a5d:4651:: with SMTP id j17mr19532177wrs.50.1589819005555;
+        Mon, 18 May 2020 09:23:25 -0700 (PDT)
+ARC-Seal: i=1; a=rsa-sha256; t=1589819005; cv=none;
+        d=google.com; s=arc-20160816;
+        b=IZbNnzzuYzTFuqfuZwpd3ehqpYYGpn31c8DsfGbQ8rpbS0OTTROkVYvihQl8Ne/8X/
+         brEWsrcmaCh9WpFMzpI+cp/TY39uusnI6qdp5rcgrFmFgoANtwf3TBBj1+f7wBPn46BP
+         dQOUsg/J8KVfvzVgvL1x4uyJ0m9QirDgJeJ/BvrswbTleRQK7oY3fIireUCDxj6r2lCB
+         1Z0TKw1mgIb1LiFMZz8kvCNn3R4KSFnwS8rIju0hYwnsioNiExVQgumXL+RVkEZ9BMzf
+         UdoWIAw3VW+MOZFTpfLCEfgIPtLg/gtE0Q1P+a3KKpi8dkPiV2n6DGMecy9lTLtdhCXt
+         pnaA==
+ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816;
+        h=in-reply-to:references:subject:from:date:message-id:auto-submitted
+         :to:dkim-signature;
+        bh=5xjZvcHbEGbMY0K2QB+3U6tpm1L1LAVv5h1pd4YXDEE=;
+        b=nNP0DktrSjdBaFfhhoDi2O9KVKM0iXE5ZgubQ0q0ff68Z6Ke7c8dDBXEsZoToI0s4Y
+         w90KyJFpgMJLFmP3iVDRqCfohi2y1HGdWg5VXQPTvzM7+YozZRlbNNV9UsuyRY91CXrJ
+         a2XREBgB+LPMGQivwcHtUMZfyNv/4uiwWivk+92ySNDhxqOiDt4R5Jak/7RkZMFwQpsE
+         JGwk6asM6VqZlihkF24lKv3pPaob6feyX3wD5N0+Mqiy1kQTj2JkpQk6nkTmdf0gapZe
+         fOhU1NkbNfbuS3U7m2gEUiyktE+MhV/MgAzgBhm9bgNt2gQLVWju8rHkPndfv1PDmEkC
+         FsYQ==
+ARC-Authentication-Results: i=1; mx.google.com;
+       dkim=pass header.i=@googlemail.com header.s=20161025 header.b=dPisws+O;
+       spf=pass (google.com: best guess record for domain of postmaster@mail-sor-f69.google.com designates 209.85.220.69 as permitted sender) smtp.helo=mail-sor-f69.google.com;
+       dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=googlemail.com
+Return-Path: <>
+Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69])
+        by mx.google.com with SMTPS id s18sor5584435wrb.25.2020.05.18.09.23.25
+        for <alice@gmail.com>
+        (Google Transport Security);
+        Mon, 18 May 2020 09:23:25 -0700 (PDT)
+Received-SPF: pass (google.com: best guess record for domain of postmaster@mail-sor-f69.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69;
+Authentication-Results: mx.google.com;
+       dkim=pass header.i=@googlemail.com header.s=20161025 header.b=dPisws+O;
+       spf=pass (google.com: best guess record for domain of postmaster@mail-sor-f69.google.com designates 209.85.220.69 as permitted sender) smtp.helo=mail-sor-f69.google.com;
+       dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=googlemail.com
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
+        d=googlemail.com; s=20161025;
+        h=to:auto-submitted:message-id:date:from:subject:references
+         :in-reply-to;
+        bh=5xjZvcHbEGbMY0K2QB+3U6tpm1L1LAVv5h1pd4YXDEE=;
+        b=dPisws+OwGFyOy0a612XYZgvz5T71GcJRJtU068/Tce8vN/+ggIQtUsZnZtsphe71v
+         2NvfP9ULxR4cXvomTvhrYAk19KdxN/S7SeyBbmXv3x/tg+DBVCmmPS/6RXrcl6Ms3Hkw
+         uPFQ9S3KcvHe/2bcb5LSTA/stIP4tuxxAXvsX2j+MjPYPWKAl50jkSbWK98U0Q0U+MTl
+         pKaaC9s9iEBafac8BFZCy4DfpumKlemNEyRa3cSV2hw+DYHKA5peModrK1A2tcsfstFF
+         rZi8yF/D90RIFbE04DI2QCxB3trsChNF1aYF06aSzI//wsfM1+lb+uGPi0YVkw3n4HrX
+         Xw4w==
+X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
+        d=1e100.net; s=20161025;
+        h=x-gm-message-state:to:auto-submitted:message-id:date:from:subject
+         :references:in-reply-to;
+        bh=5xjZvcHbEGbMY0K2QB+3U6tpm1L1LAVv5h1pd4YXDEE=;
+        b=A/NCOtgbpA7VzB1G7ZFo8TA2FfrjuqjGdwMrJr3yXe21FrBFwzssprJwOkynqoVLkK
+         iJU7uMF/KTcQPDEmOLFThzFfe5GCx7eJtZPhwY+FbBlC5sq4I55/xaQLd0gOZ1BYXwMn
+         2bk169d2aoukbaLbGSQZF3d9atd+/e48YzkRxpmUoLcrWk2LcHAeQIG7SgT9pfX5DKPr
+         VpxM5/GMVEBbTRhBIWCeVSfpYCs80l0xEeTC3/B5lzpzMVDE8QCW6Dwh75b4Tb2K6yru
+         Zsy5ZpRmwv0wrkrb2vM+pl4IMkaF7s8XosIvlIT++fQV5xDFItT4atpykZvSDB92RKV0
+         8lEA==
+X-Gm-Message-State: AOAM532RG/PT3ChZHBCDORGLtAjKvX8TGBuOy+AxrnEaJT6v1ieb+VV1
+	+ejly+/6UthxHYlkOJYAszCSgL4dKVFotoVaN7LhEA==
+X-Google-Smtp-Source: ABdhPJz6veVKWhomCL4gK+whrybuMzHCDCq8AowgQvi7sobpMoM/k9CDw79jo1j3OUcTz6MEeUYLxEXuNIuu4zyoS7kVtsUYryGFHAI=
+X-Received: by 2002:a5d:5183:: with SMTP id k3mr20545185wrv.159.1589819005394;
+        Mon, 18 May 2020 09:23:25 -0700 (PDT)
+Content-Type: multipart/report; boundary="00000000000012d63005a5ee9520"; report-type=delivery-status
+To: alice@gmail.com
+Received: by 2002:a5d:5183:: with SMTP id k3mr13704211wrv.159; Mon, 18 May
+ 2020 09:23:25 -0700 (PDT)
+Return-Path: <>
+Auto-Submitted: auto-replied
+Message-ID: <5ec2b67d.1c69fb81.213af.67a5.GMR@mx.google.com>
+Date: Mon, 18 May 2020 09:23:25 -0700 (PDT)
+From: Mail Delivery Subsystem <mailer-daemon@googlemail.com>
+Subject: Delivery Status Notification (Failure)
+References: <CABXKi8zruXJc_6e4Dr087H5wE7sLp+u250o0N2q5DdjF_r-8wg@mail.gmail.com>
+In-Reply-To: <CABXKi8zruXJc_6e4Dr087H5wE7sLp+u250o0N2q5DdjF_r-8wg@mail.gmail.com>
+X-Failed-Recipients: assidhfaaspocwaeofi@gmail.com
+
+--00000000000012d63005a5ee9520
+Content-Type: multipart/related; boundary="00000000000012dc0005a5ee952f"
+
+--00000000000012dc0005a5ee952f
+Content-Type: multipart/alternative; boundary="00000000000012dc0705a5ee9530"
+
+--00000000000012dc0705a5ee9530
+Content-Type: text/plain; charset="UTF-8"
+
+
+** Die Adresse wurde nicht gefunden **
+
+Ihre Nachricht wurde nicht an assidhfaaspocwaeofi@gmail.com zugestellt, weil die Adresse nicht gefunden wurde oder keine E-Mails empfangen kann.
+
+Hier erfahren Sie mehr: https://support.google.com/mail/?p=NoSuchUser
+
+Antwort:
+
+550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser i18sor6261697wrs.38 - gsmtp
+
+--00000000000012dc0705a5ee9530
+Content-Type: text/html; charset="UTF-8"
+
+
+<html>
+<head>
+<style>
+* {
+font-family:Roboto, "Helvetica Neue", Helvetica, Arial, sans-serif;
+}
+</style>
+</head>
+<body>
+<table cellpadding="0" cellspacing="0" class="email-wrapper" style="padding-top:32px;background-color:#ffffff;"><tbody>
+<tr><td>
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+<table style="min-width:272px;padding-top:8px"><tbody>
+<tr><td><h2 style="font-size:20px;color:#212121;font-weight:bold;margin:0">
+Die Adresse wurde nicht gefunden
+</h2></td></tr>
+<tr><td style="padding-top:20px;color:#757575;font-size:16px;font-weight:normal;text-align:left">
+Ihre Nachricht wurde nicht an <a style='color:#212121;text-decoration:none'><b>assidhfaaspocwaeofi@gmail.com</b></a> zugestellt, weil die Adresse nicht gefunden wurde oder keine E-Mails empfangen kann.
+</td></tr>
+<tr><td style="padding-top:24px;color:#4285F4;font-size:14px;font-weight:bold;text-align:left">
+<a style="text-decoration:none" href="https://support.google.com/mail/?p=NoSuchUser">WEITERE INFORMATIONEN</a>
+</td></tr>
+</tbody></table>
+</td></tr>
+</tbody></table>
+</td></tr>
+<tr style="border:none;background-color:#fff;font-size:12.8px;width:90%">
+<td align="left" style="padding:48px 10px">
+Antwort:<br/>
+<p style="font-family:monospace">
+550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient&#39;s email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser i18sor6261697wrs.38 - gsmtp
+</p>
+</td>
+</tr>
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+Reporting-MTA: dns; googlemail.com
+Arrival-Date: Mon, 18 May 2020 09:23:25 -0700 (PDT)
+X-Original-Message-ID: <CABXKi8zruXJc_6e4Dr087H5wE7sLp+u250o0N2q5DdjF_r-8wg@mail.gmail.com>
+
+Final-Recipient: rfc822; assidhfaaspocwaeofi@gmail.com
+Action: failed
+Status: 5.1.1
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+ 550-5.1.1 double-checking the recipient's email address for typos or
+ 550-5.1.1 unnecessary spaces. Learn more at
+ 550 5.1.1  https://support.google.com/mail/?p=NoSuchUser i18sor6261697wrs.38 - gsmtp
+Last-Attempt-Date: Mon, 18 May 2020 09:23:25 -0700 (PDT)
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+ Mon, 18 May 2020 09:23:25 -0700 (PDT)
+MIME-Version: 1.0
+From: <alice@gmail.com>
+Date: Mon, 18 May 2020 18:23:39 +0200
+Message-ID: <CABXKi8zruXJc_6e4Dr087H5wE7sLp+u250o0N2q5DdjF_r-8wg@mail.gmail.com>
+Subject: Kommt sowieso nicht an
+To: assidhfaaspocwaeofi@gmail.com
+Content-Type: multipart/alternative; boundary="0000000000000d652a05a5ee95df"
+
+--0000000000000d652a05a5ee95df
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+Wollte nur was testen
+
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+
+<div dir="ltr">Wollte nur was testen<br></div>
+
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+Received: by 2002:a02:6629:0:0:0:0:0 with SMTP id k41csp368502jac;
+        Wed, 10 Jun 2020 05:17:57 -0700 (PDT)
+X-Received: by 2002:a6b:1448:: with SMTP id 69mr2898530iou.83.1591791475733;
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+       dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=googlemail.com
+Return-Path: <>
+Received: from mail-sor-f69.google.com (mail-sor-f69.google.com. [209.85.220.69])
+        by mx.google.com with SMTPS id w14sor16686480iow.23.2020.06.10.05.17.55
+        for <alice@gmail.com>
+        (Google Transport Security);
+        Wed, 10 Jun 2020 05:17:55 -0700 (PDT)
+Received-SPF: pass (google.com: best guess record for domain of postmaster@mail-sor-f69.google.com designates 209.85.220.69 as permitted sender) client-ip=209.85.220.69;
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+To: alice@gmail.com
+Received: by 2002:a05:6638:101c:: with SMTP id r28mr3059870jab.84; Wed, 10 Jun
+ 2020 05:17:55 -0700 (PDT)
+Return-Path: <>
+Auto-Submitted: auto-replied
+Message-ID: <5ee0cf73.1c69fb81.6888.c2f4.GMR@mx.google.com>
+Date: Wed, 10 Jun 2020 05:17:55 -0700 (PDT)
+From: Mail Delivery Subsystem <mailer-daemon@googlemail.com>
+Subject: Delivery Status Notification (Failure)
+References: <CADWx9Cs32Wa7Gy-gM0bvbq54P_FEHe7UcsAV=yW7sVVW=fiMYQ@mail.gmail.com>
+In-Reply-To: <CADWx9Cs32Wa7Gy-gM0bvbq54P_FEHe7UcsAV=yW7sVVW=fiMYQ@mail.gmail.com>
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+
+** Die Adresse wurde nicht gefunden **
+
+Ihre Nachricht wurde nicht an assidhfaaspocwaeofi@gmail.com zugestellt, weil die Adresse nicht gefunden wurde oder keine E-Mails empfangen kann.
+
+Hier erfahren Sie mehr: https://support.google.com/mail/?p=NoSuchUser
+
+Antwort:
+
+550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient's email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser h20sor9401601jar.6 - gsmtp
+
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+}
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+<table style="min-width:272px;padding-top:8px"><tbody>
+<tr><td><h2 style="font-size:20px;color:#212121;font-weight:bold;margin:0">
+Die Adresse wurde nicht gefunden
+</h2></td></tr>
+<tr><td style="padding-top:20px;color:#757575;font-size:16px;font-weight:normal;text-align:left">
+Ihre Nachricht wurde nicht an <a style='color:#212121;text-decoration:none'><b>assidhfaaspocwaeofi@gmail.com</b></a> zugestellt, weil die Adresse nicht gefunden wurde oder keine E-Mails empfangen kann.
+</td></tr>
+<tr><td style="padding-top:24px;color:#4285F4;font-size:14px;font-weight:bold;text-align:left">
+<a style="text-decoration:none" href="https://support.google.com/mail/?p=NoSuchUser">WEITERE INFORMATIONEN</a>
+</td></tr>
+</tbody></table>
+</td></tr>
+</tbody></table>
+</td></tr>
+<tr style="border:none;background-color:#fff;font-size:12.8px;width:90%">
+<td align="left" style="padding:48px 10px">
+Antwort:<br/>
+<p style="font-family:monospace">
+550 5.1.1 The email account that you tried to reach does not exist. Please try double-checking the recipient&#39;s email address for typos or unnecessary spaces. Learn more at https://support.google.com/mail/?p=NoSuchUser h20sor9401601jar.6 - gsmtp
+</p>
+</td>
+</tr>
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+
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+Arrival-Date: Wed, 10 Jun 2020 05:17:55 -0700 (PDT)
+X-Original-Message-ID: <CADWx9Cs32Wa7Gy-gM0bvbq54P_FEHe7UcsAV=yW7sVVW=fiMYQ@mail.gmail.com>
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+Diagnostic-Code: smtp; 550-5.1.1 The email account that you tried to reach does not exist. Please try
+ 550-5.1.1 double-checking the recipient's email address for typos or
+ 550-5.1.1 unnecessary spaces. Learn more at
+ 550 5.1.1  https://support.google.com/mail/?p=NoSuchUser h20sor9401601jar.6 - gsmtp
+Last-Attempt-Date: Wed, 10 Jun 2020 05:17:55 -0700 (PDT)
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+ Wed, 10 Jun 2020 05:17:55 -0700 (PDT)
+MIME-Version: 1.0
+From: Deltachat Test <alice@gmail.com>
+Date: Wed, 10 Jun 2020 14:18:26 +0200
+Message-ID: <CADWx9Cs32Wa7Gy-gM0bvbq54P_FEHe7UcsAV=yW7sVVW=fiMYQ@mail.gmail.com>
+Subject: test
+To: bob@example.org, assidhfaaspocwaeofi@gmail.com
+Content-Type: multipart/alternative; boundary="0000000000006d8d7d05a7b9d5b3"
+
+--0000000000006d8d7d05a7b9d5b3
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+test
+
+--0000000000006d8d7d05a7b9d5b3
+Content-Type: text/html; charset="UTF-8"
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+<div dir="ltr">test<br></div>
+
+--0000000000006d8d7d05a7b9d5b3--
+
+--00000000000074432a05a7b9d512--
--- a/test-data/message/gmx_ndn.eml
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@@ -0,0 +1,113 @@
+Return-Path: <>
+Received: from mout-bounce.gmx.net ([212.227.15.44]) by mx-ha.gmx.net
+ (mxgmx101 [212.227.17.5]) with ESMTPS (Nemesis) id 1Mr97m-1jC6Y01o86-00oEqk
+ for <alice@gmx.de>; Tue, 09 Jun 2020 14:35:30 +0200
+Received: from localhost by mout-bounce.gmx.net id 0LhiZF-1jDTj11ZoH-00msO3
+    Tue, 09 Jun 2020 14:35:30 +0200
+Date: Tue, 09 Jun 2020 14:35:30 +0200
+From: "GMX Mailer Daemon" <mailer-daemon@gmx.de>
+To: alice@gmx.de
+Subject: Mail delivery failed: returning message to sender
+Auto-Submitted: auto-replied
+MIME-Version: 1.0
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+
+This message was created automatically by mail delivery software.
+
+A message that you sent could not be delivered to one or more of
+its recipients. This is a permanent error. The following address(es)
+failed:
+
+snaerituhaeirns@gmail.com:
+SMTP error from remote server for RCPT TO command, host: gmail-smtp-in.l.google.com (66.102.1.27) reason: 550-5.1.1 The email account that you tried to reach does not exist. Please
+ try
+550-5.1.1 double-checking the recipient's email address for typos or
+550-5.1.1 unnecessary spaces. Learn more at
+550 5.1.1  https://support.google.com/mail/?p=NoSuchUser f6si2517766wmc.21
+9 - gsmtp
+
+
+
+--- The header of the original message is following. ---
+
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net;
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+ [212.227.17.190]) with ESMTPSA (Nemesis) id 1MKbkM-1jNoq60HKm-00KyL2 for
+ <snaerituhaeirns@gmail.com>; Tue, 09 Jun 2020 14:35:30 +0200
+To: snaerituhaeirns@gmail.com
+From: Alice <alice@gmx.de>
+Subject: test
+Message-ID: <9c9c2a32-056b-3592-c372-d7e8f0bd4bc2@gmx.de>
+Date: Tue, 9 Jun 2020 14:36:10 +0200
+User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
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+
+
--- a/test-data/message/posteo_ndn.eml
+++ b/test-data/message/posteo_ndn.eml
@@ -0,0 +1,113 @@
+Return-Path: <>
+Delivered-To: alice@posteo.org
+Received: from proxy02.posteo.name ([127.0.0.1])
+	by dovecot03.posteo.local (Dovecot) with LMTP id zvCFJRzX317LGQIA+3EWog
+	for <alice@posteo.org>; Tue, 09 Jun 2020 20:44:24 +0200
+Received: from proxy02.posteo.de ([127.0.0.1])
+	by proxy02.posteo.name (Dovecot) with LMTP id mhNkNAnR316xBQMAGFAyLg
+	; Tue, 09 Jun 2020 20:44:23 +0200
+Received: from mailin06.posteo.de (unknown [10.0.1.6])
+	by proxy02.posteo.de (Postfix) with ESMTPS id 49hJtv3RRcz11m7
+	for <alice@posteo.org>; Tue,  9 Jun 2020 20:44:23 +0200 (CEST)
+Received: from mx04.posteo.de (mailin06.posteo.de [127.0.0.1])
+	by mailin06.posteo.de (Postfix) with ESMTPS id 6935920DD2
+	for <alice@posteo.org>; Tue,  9 Jun 2020 20:44:23 +0200 (CEST)
+X-Virus-Scanned: amavisd-new at posteo.de
+X-Spam-Flag: NO
+X-Spam-Score: -1
+X-Spam-Level: 
+X-Spam-Status: No, score=-1 tagged_above=-1000 required=8
+	tests=[ALL_TRUSTED=-1] autolearn=disabled
+Received: from mout01.posteo.de (mout01.posteo.de [185.67.36.65])
+	by mx04.posteo.de (Postfix) with ESMTPS id 49hJtv001Vz10kT
+	for <alice@posteo.org>; Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+Authentication-Results: mx04.posteo.de; dmarc=none (p=none dis=none) header.from=mout01.posteo.de
+Received: by mout01.posteo.de (Postfix)
+	id DCB6B1200DD; Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+Date: Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+From: MAILER-DAEMON@mout01.posteo.de (Mail Delivery System)
+Subject: Undelivered Mail Returned to Sender
+To: alice@posteo.org
+Auto-Submitted: auto-replied
+MIME-Version: 1.0
+Content-Type: multipart/report; report-type=delivery-status;
+	boundary="B39111200B9.1591728262/mout01.posteo.de"
+Content-Transfer-Encoding: 7bit
+Message-Id: <20200609184422.DCB6B1200DD@mout01.posteo.de>
+
+This is a MIME-encapsulated message.
+
+--B39111200B9.1591728262/mout01.posteo.de
+Content-Description: Notification
+Content-Type: text/plain; charset=us-ascii
+
+This is the mail system at host mout01.posteo.de.
+
+I'm sorry to have to inform you that your message could not
+be delivered to one or more recipients. It's attached below.
+
+For further assistance, please send mail to postmaster.
+
+If you do so, please include this problem report. You can
+delete your own text from the attached returned message.
+
+                   The mail system
+
+<hanerthaertidiuea@gmx.de>: host mx01.emig.gmx.net[212.227.17.5] said: 550
+    Requested action not taken: mailbox unavailable (in reply to RCPT TO
+    command)
+
+--B39111200B9.1591728262/mout01.posteo.de
+Content-Description: Delivery report
+Content-Type: message/delivery-status
+
+Reporting-MTA: dns; mout01.posteo.de
+X-Postfix-Queue-ID: B39111200B9
+X-Postfix-Sender: rfc822; alice@posteo.org
+Arrival-Date: Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+
+Final-Recipient: rfc822; hanerthaertidiuea@gmx.de
+Original-Recipient: rfc822;hanerthaertidiuea@gmx.de
+Action: failed
+Status: 5.0.0
+Remote-MTA: dns; mx01.emig.gmx.net
+Diagnostic-Code: smtp; 550 Requested action not taken: mailbox unavailable
+
+--B39111200B9.1591728262/mout01.posteo.de
+Content-Description: Undelivered Message Headers
+Content-Type: text/rfc822-headers
+
+Return-Path: <alice@posteo.org>
+Received: from mout01.posteo.de (unknown [10.0.0.65])
+	by mout01.posteo.de (Postfix) with ESMTPS id B39111200B9
+	for <hanerthaertidiuea@gmx.de>; Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+Received: from submission-encrypt01.posteo.de (unknown [10.0.0.75])
+	by mout01.posteo.de (Postfix) with ESMTPS id 8A684160060
+	for <hanerthaertidiuea@gmx.de>; Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=posteo.de; s=2017;
+	t=1591728262; bh=g3zLYH4xKxcPrHOD18z9YfpQcnk/GaJedfustWU5uGs=;
+	h=To:From:Subject:Date:From;
+	b=brJnt4PLAX3Tda1RHCo91aB1kMAL/Ku9dmO7D2DD41Zu5ShNsyqqyDkyxb1DsDn3O
+	 6KuBZe3/8gemBuCJ/mxzwd9v8sBnlrV+5afIk0Ye9VvthZsc4HoG79+FiVOi9F38o0
+	 DtJJFYFw/X7mAc5Xyt0B0JvtiTPpBdRAkluUQm+QW6cW6GGlwicVW19qvebzq+sHyP
+	 X2bZ8wpo78yVgvjPBK3DLaXa+pKFMBjLdDUcIE2bZnY6u6F1x8SXGKGBoxVwdJipJx
+	 v14so5IejNsf4LYJjH3Qb8xgK1aAi6e6nQn4YXV0INL6ahzgALiT9N6vwunNKYVJNi
+	 fPPKvBWDfUS4Q==
+Received: from customer (localhost [127.0.0.1])
+	by submission (posteo.de) with ESMTPSA id 49hJtt1WPbz6tmV
+	for <hanerthaertidiuea@gmx.de>; Tue,  9 Jun 2020 20:44:22 +0200 (CEST)
+To: hanerthaertidiuea@gmx.de
+From: deltachat <alice@posteo.org>
+Subject: test
+Message-ID: <04422840-f884-3e37-5778-8192fe22d8e1@posteo.de>
+Date: Tue, 9 Jun 2020 20:45:02 +0200
+User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:68.0) Gecko/20100101
+ Thunderbird/68.8.1
+MIME-Version: 1.0
+Content-Type: text/plain; charset=utf-8
+Content-Transfer-Encoding: 7bit
+Content-Language: de-DE
+Posteo-User: alice@posteo.org
+Posteo-Dkim: ok
+
+--B39111200B9.1591728262/mout01.posteo.de--
--- a/test-data/message/testrun_ndn.eml
+++ b/test-data/message/testrun_ndn.eml
@@ -0,0 +1,107 @@
+Return-Path: <>
+Delivered-To: alice@testrun.org
+Received: from hq5.merlinux.eu
+	by hq5.merlinux.eu (Dovecot) with LMTP id Ye02K6PB5F43cQAAPzvFDg
+	for <alice@testrun.org>; Sat, 13 Jun 2020 14:08:03 +0200
+Received: by hq5.merlinux.eu (Postfix)
+	id 9EBE627A0B2E; Sat, 13 Jun 2020 14:08:03 +0200 (CEST)
+Date: Sat, 13 Jun 2020 14:08:03 +0200 (CEST)
+From: MAILER-DAEMON@hq5.merlinux.eu (Mail Delivery System)
+Subject: Undelivered Mail Returned to Sender
+To: alice@testrun.org
+Auto-Submitted: auto-replied
+MIME-Version: 1.0
+Content-Type: multipart/report; report-type=delivery-status;
+	boundary="CDB8D27A0B2C.1592050083/hq5.merlinux.eu"
+Content-Transfer-Encoding: 8bit
+Message-Id: <20200613120803.9EBE627A0B2E@hq5.merlinux.eu>
+
+This is a MIME-encapsulated message.
+
+--CDB8D27A0B2C.1592050083/hq5.merlinux.eu
+Content-Description: Notification
+Content-Type: text/plain; charset=utf-8
+Content-Transfer-Encoding: 8bit
+
+This is the mail system at host hq5.merlinux.eu.
+
+I'm sorry to have to inform you that your message could not
+be delivered to one or more recipients. It's attached below.
+
+For further assistance, please send mail to postmaster.
+
+If you do so, please include this problem report. You can
+delete your own text from the attached returned message.
+
+                   The mail system
+
+<hcksocnsofoejx@five.chat>: host mail.five.chat[195.62.125.103] said: 550 5.1.1
+    <hcksocnsofoejx@five.chat>: Recipient address rejected: User unknown in
+    virtual mailbox table (in reply to RCPT TO command)
+
+--CDB8D27A0B2C.1592050083/hq5.merlinux.eu
+Content-Description: Delivery report
+Content-Type: message/global-delivery-status
+Content-Transfer-Encoding: 8bit
+
+Reporting-MTA: dns; hq5.merlinux.eu
+X-Postfix-Queue-ID: CDB8D27A0B2C
+X-Postfix-Sender: rfc822; alice@testrun.org
+Arrival-Date: Sat, 13 Jun 2020 14:08:01 +0200 (CEST)
+
+Final-Recipient: rfc822; hcksocnsofoejx@five.chat
+Original-Recipient: rfc822;hcksocnsofoejx@five.chat
+Action: failed
+Status: 5.1.1
+Remote-MTA: dns; mail.five.chat
+Diagnostic-Code: smtp; 550 5.1.1 <hcksocnsofoejx@five.chat>: Recipient address
+    rejected: User unknown in virtual mailbox table
+
+--CDB8D27A0B2C.1592050083/hq5.merlinux.eu
+Content-Description: Undelivered Message
+Content-Type: message/global
+Content-Transfer-Encoding: 8bit
+
+Return-Path: <alice@testrun.org>
+Received: from localhost (p200300edb723070079835ce22985a199.dip0.t-ipconnect.de [IPv6:2003:ed:b723:700:7983:5ce2:2985:a199])
+	by hq5.merlinux.eu (Postfix) with UTF8SMTPSA id CDB8D27A0B2C;
+	Sat, 13 Jun 2020 14:08:01 +0200 (CEST)
+DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=testrun.org;
+	s=testrun; t=1592050082;
+	bh=Kvhta0OMsTRVC7OlaAqo68TBE0KuGBv4vUBp6Ez/7VY=;
+	h=Subject:References:In-Reply-To:Date:To:From:From;
+	b=Ql60JEGFXLNvjsyihATw2z34ct++8xZvTPNw0snXe6+oqdqsRZJ9tWNDTxOgx8Iqf
+	 HQ4puBVGcWjIlszYQVLlq3APi04o2ep3GrD8EF0J0GpDdW8yw6wCos6Q8r+TWmXwET
+	 kGXHTRPVaUIqZF2i/utypxMfd1ua0S3jBDnIXTe/p2+XvfC3Cf3hZGW+FQ/Zd7G8Vh
+	 /U2rgX5BTIGf26ZCbmcMaXWkftgv6+yns0AmzorV9yB+EhTkWIUjk+C25bRtMbJ5mZ
+	 93dwdr+sXrrSZLSi+LBqc57Dv9j4p/SUmB4zPlvfUv7/bqLi36pypvtCJ5Ul8UEXSb
+	 XNFZPaEl+mwjA==
+Content-Type: text/plain; charset=utf-8
+Chat-Disposition-Notification-To: alice@testrun.org
+Subject: =?utf-8?q?Message_from_hocuri1=40testrun=2Eorg?=
+MIME-Version: 1.0
+References: <Mr.VSg3KXFUOTG.9sn7JBxZn1W@testrun.org>
+	<Mr.F4nR4LnXb6v.gqVbCJRgsmn@testrun.org>
+In-Reply-To: <Mr.F4nR4LnXb6v.gqVbCJRgsmn@testrun.org>
+Date: Sat, 13 Jun 2020 12:08:01 +0000
+X-Mailer: Delta Chat Core 1.35.0/Android 1.9.5
+Chat-Version: 1.0
+Autocrypt: addr=alice@testrun.org; prefer-encrypt=mutual;
+	keydata=xjMEXt3z1xYJKwYBBAHaRw8BAQdAf6MctU/8cmEqwEN9VFZ3gHBFIxKiEaARZl1DFUkI7e
+	rNFTxob2N1cmkxQHRlc3RydW4ub3JnPsKLBBAWCAAzAhkBBQJe3fPXAhsDBAsJCAcGFQgJCgsCAxYC
+	ARYhBIZ3ajRUkki89+04sgctAtaIXygAAAoJEActAtaIXygAG2IA/1nTmmmkHAc1Bjtx2FOstbaS+N
+	XHjxaK+hkoWllsyhz0AQDJJ1++u7jVZPRn/j1LlByrT3Jv/D1aY14J5rjj+ADVBM44BF7d89cSCisG
+	AQQBl1UBBQEBB0DpSTaZ30dAVwM9PkBe2h+gFyxn9HSorP4XCHJu/lIdPAMBCAfCeAQYFggAIAUCXt
+	3z1wIbDBYhBIZ3ajRUkki89+04sgctAtaIXygAAAoJEActAtaIXygA2QkA/16toWCtseYKw8G1X2j7
+	xYR3Cyabq37hgbesDOThIIzNAP0UCUS8mnunmkS5adEbftRaDi2JZoGxDw46jtJJ2+13Cw==
+Message-ID: <Mr.A7pTA5IgrUA.q4bP41vAJOp@testrun.org>
+To: <hcksocnsofoejx@five.chat>
+From:  <alice@testrun.org>
+
+F
+
+-- 
+Sent with my Delta Chat Messenger: https://delta.chat
+
+
+--CDB8D27A0B2C.1592050083/hq5.merlinux.eu--
--- a/test-data/message/tiscali_ndn.eml
+++ b/test-data/message/tiscali_ndn.eml
@@ -0,0 +1,91 @@
+Return-Path: <>
+Delivered-To: alice@tiscali.it
+Received: from director-5.mail.tiscali.sys ([10.39.80.174])
+	by dovecot-08.mail.tiscali.sys with LMTP id SBRfEpGb517VAgAAd2fHbg
+	for <alice@tiscali.it>; Mon, 15 Jun 2020 16:02:25 +0000
+Received: from cmgw-4.mail.tiscali.it ([10.39.80.174])
+	by director-5.mail.tiscali.sys with LMTP id MFUPL5Cb516tawAArQJVuQ
+	; Mon, 15 Jun 2020 16:02:25 +0000
+Received: from michael.mail.tiscali.it ([213.205.33.246])
+	by cmgw-4.mail.tiscali.it with 
+	id rTtS2200V5JdeUd01U2RlV; Mon, 15 Jun 2020 16:02:25 +0000
+x-cnfs-analysis: v=2.3 cv=ZdPMyfdA c=1 sm=1 tr=0 cx=a_idp_d
+ a=AfTPebshMYb+aQOCLa9q3Q==:117 a=HpEJnUlJZJkA:10 a=jmdcTMp_Gj4A:10
+ a=r77TgQKjGQsHNAKrUKIA:9 a=b8iBRs35AAAA:8 a=NMdB-582e605uxHDr_AA:9
+ a=QEXdDO2ut3YA:10 a=MhhPCb74-dYA:10 a=HXlsH_Kov2KnitTn7A4A:9
+ a=BkuCPOF3BOzethIN9HQA:9 a=qG5HpJ6ZyD35YNEB:21 a=kvHihYffoorsyJbA:21
+ a=xD8EQi6zkreDqSNPYj5l:22
+Date: Mon, 15 Jun 2020 16:02:25 +0000
+From: Mail Delivery System <mail-daemon@smtp.tiscali.it>
+To: alice@tiscali.it
+Subject: Delivery status notification
+MIME-Version: 1.0
+Content-Type: multipart/report; boundary="------------I305M09060309060P_896715922369450"
+
+This is a multi-part message in MIME format.
+
+--------------I305M09060309060P_896715922369450
+Content-Type: text/plain; charset=UTF-8;
+Content-Transfer-Encoding: 8bit
+
+      This is an automatically generated Delivery Status Notification.      
+
+Delivery to the following recipients was aborted after 2 second(s):
+
+  * shenauithz@testrun.org
+
+
+
+--------------I305M09060309060P_896715922369450
+Content-Type: message/delivery-status; charset=UTF-8;
+Content-Transfer-Encoding: 8bit
+
+Reporting-MTA: dns; michael.mail.tiscali.it [213.205.33.13]
+Received-From-MTA: dns; localhost [146.241.100.150]
+Arrival-Date: Mon, 15 Jun 2020 16:02:23 +0000
+
+
+Final-recipient: rfc822; shenauithz@testrun.org
+Action: failed
+Status: 5.1.1
+Diagnostic-Code: smtp; 550 5.1.1 <shenauithz@testrun.org>: Recipient address rejected: User unknown in virtual mailbox table
+Last-attempt-Date: Mon, 15 Jun 2020 16:02:25 +0000
+
+
+
+--------------I305M09060309060P_896715922369450
+Content-Type: text/rfc822-headers; Content-Transfer-Encoding: 8bit
+Content-Disposition: attachment
+
+x-auth-user: alice@tiscali.it
+Chat-Disposition-Notification-To: alice@tiscali.it
+Chat-User-Avatar: avatar.jpg
+Subject: =?utf-8?q?Message_from_=F0=9F=8F=9E=EF=B8=8F_Mefiscali?=
+MIME-Version: 1.0
+Date: Mon, 15 Jun 2020 16:02:22 +0000
+X-Mailer: Delta Chat Core 1.35.0/Android 1.9.5
+Chat-Version: 1.0
+Autocrypt: addr=alice@tiscali.it; prefer-encrypt=mutual;
+	keydata=xjMEXtFRUBYJKwYBBAHaRw8BAQdA5sqHJqkWlveCgsNd0rtwtZrT1mmo1gwaGC5+WheYk5
+	nNHTxhbmRyZWFzLmxhdHRtYW5uQHRpc2NhbGkuaXQ+wosEEBYIADMCGQEFAl7RUXoCGwMECwkIBwYV
+	CAkKCwIDFgIBFiEEJUsbRIjZEaRNAs1p1Z5M1vshkrAACgkQ1Z5M1vshkrAAaAEA4wssXeU2IXnowv
+	iu3zmcNzDgE4HdmW4RFyqJC6bgxXQA/3aTfE/PhQgZvi6RrKMvP4zygXpD9y+3ydIZP88Bp8kIzjgE
+	XtFRUBIKKwYBBAGXVQEFAQEHQKaAwlP0j9m0aYsCtO+qD9+foH0kiTN5BWDe5YcZrckVAwEIB8J4BB
+	gWCAAgBQJe0VF6AhsMFiEEJUsbRIjZEaRNAs1p1Z5M1vshkrAACgkQ1Z5M1vshkrA1JgEAkscCQlps
+	h3ZxlLqBlbf2+85f4S4aGQfFPtIYEkKKhYEBAJbQulNNp9UarvhfyBiIdvkBVDcCnJZwzbORqp8RM0 gC
+Message-ID: <Mr.un2NYERi1RM.lbQ5F9q-QyJ@tiscali.it>
+To: <shenauithz@testrun.org>
+From: =?utf-8?b?8J+Pnu+4jyBNZWZpc2NhbGk=?= <alice@tiscali.it>
+Content-Type: multipart/mixed; boundary="5uAmYQux1HZxxriijTjjKSp4DMoJwq"
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=tiscali.it; s=smtp;
+	t=1592236943; bh=C3taz+zuSre1ko5Q5CzGPmbyrgegKYBClx/3Dv7t/Xw=;
+	h=Subject:Date:To:From;
+	b=LrcfLfrQoemOkHTQsqR8MExqNlx5KPYNFWhwlBWylvVc5GlmlhzqM6SAVKd0NVsKE
+	 gVRlBId5FvnlwoJ2WZnXaw/+3lWKilMTuzzQ1oFGvLnZ1XUaUEfuliIv+9NI79dJWX
+	 +S3jsSgzJMJc9+fO6s9bJsX1EHQ2a8GXNbwDtLXs=
+
+
+
+--------------I305M09060309060P_896715922369450--
+
+
--- a/test-data/message/yahoo_ndn.eml
+++ b/test-data/message/yahoo_ndn.eml
@@ -0,0 +1,100 @@
+X-Atlas-Received: from 10.218.250.153 by atlas222.free.mail.ne1.yahoo.com with http; Wed, 10 Jun 2020 10:11:23 +0000
+Return-Path: <>
+Received: from 77.238.177.145 (EHLO sonic314-19.consmr.mail.ir2.yahoo.com)
+ by atlas222.free.mail.ne1.yahoo.com with SMTPs; Wed, 10 Jun 2020 10:11:23 +0000
+X-Originating-Ip: [77.238.177.145]
+Received-SPF: none (domain of sonic314-19.consmr.mail.ir2.yahoo.com does not designate permitted sender hosts)
+Authentication-Results: atlas222.free.mail.ne1.yahoo.com;
+ dkim=pass header.i=@yahoo.com header.s=@bounce;
+ spf=none smtp.mailfrom=sonic314-19.consmr.mail.ir2.yahoo.com;
+ dmarc=success(p=REJECT) header.from=yahoo.com;
+X-Apparently-To: alice@yahoo.com; Wed, 10 Jun 2020 10:11:23 +0000
+X-YMailISG: RT5ZnycWLDvIW52uqHS_EWNgl31NdJPyLLB2F4SYb1GCAoo9
+ pcninuVU5GDMBZykeMT4cSUt4ZqXxS5FdEeWJqtGIAtbEGbIL8Uhcoszqm4m
+ JuMJiQZwEE7W_fsS_9MUK5gZtMkhKkSnAuaeaOLKNYAwFZdBqA0uEYA5EmVf
+ EC9J4RGQ4hZvrMqMj_W.cj4pvbEC.pyirLxTfkICuUkZVguYoxG16y1EOJPw
+ B48fhXvF5ErU7WAHKxyRM3bMOg7b5pXHKn1dtRSVAXEuqBAQrWig1pePpYH1
+ wO54sYT7cgmdiFvfLY5rR7YcBzopmKJBycKzBVoRLCY4gvoNyTLPKx9o3AAz
+ WU4B7TGejDBElYSLpfnyvQg8wU27zzo2IVBZWUNztP0Ca8CQ07Y7TxUZAO.f
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+ 9j9DytVhm5231gdBBRSzW78yG.VvaIdJgq_YViKNM9VxFseTz3Sjt3TaYznP
+ gAVq.MxpopNsSZf_tedwAhXDWyrjKsRPK.v2ANivmuWGPednniEaMYhxJ05M
+ _5SnJ.hAU.l6h3HCEfiU.SH390_3tZgYNfxCo4GPPFMfnNPmKa3.rgpChBCz
+ 9CRexJ8BSFyCEeAhuqQ8vSJfSuittJmXvS6Tk8Rxd9HUJAtKzZ.xCWZQ4tA6
+ Yp2aRG23_rK_C6hH8ArkkvbG.uVQTt6DltSX6avJLObBfIhBH0x64RoFjGee
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+ Uo7mKih8FCrdUKv5X6KBnpY0vvyoH5jrWyrvo3DW0bq_JvZ9U51JwUhoGY5U
+ c1t.yCSJbs8tnrGZHuUTOvouWzpCAJsk34AqRyH0wDJZQsAwBW5UZ3jx8ARA
+ FicoSqZCa4wEP9WaaXvfzFbmLW0-
+X-Originating-IP: [77.238.177.145]
+Received: from 10.217.135.165  (EHLO sonic314-19.consmr.mail.ir2.yahoo.com) (77.238.177.145)
+  by mta4277.mail.ne1.yahoo.com with SMTPS; Wed, 10 Jun 2020 10:11:21 +0000
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=bounce; t=1591783879; bh=4BmZzBC/nu0AJ9r0i0xNuCENks2KZcuXCbjSHdzbg9Y=; h=Date:From:To:Subject:From:Subject; b=lPxu8goOGOLVgnwbndfdptZ7zI5VEo0lSSr+ONGxwdtuhrySKDU6Sp41/g6jWbAiVPT1947j/B5wOlPfa5tv4XkWrGf0JCbT1I20ZJIkNfNwt4F0qPnbJAiHFIDPxcY68utjC9IgPWJd0cGqJNXbFwbJBu88rtrbMoInzLakh5I=
+Received: from sonic.gate.mail.ne1.yahoo.com by sonic314.consmr.mail.ir2.yahoo.com with HTTP; Wed, 10 Jun 2020 10:11:19 +0000
+Date: Wed, 10 Jun 2020 10:11:19 +0000
+From: MAILER-DAEMON@yahoo.com
+To: alice@yahoo.com
+Message-ID: <1713051795.39992.1591783879940@sonic314.consmr.mail.ir2.yahoo.com>
+Subject: Failure Notice
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 7bit
+Content-Length: 3347
+
+Sorry, we were unable to deliver your message to the following address.
+
+<haeclirth.sinoenrat@yahoo.com>:
+554: delivery error: dd Not a valid recipient - atlas117.free.mail.ne1.yahoo.com
+
+--- Below this line is a copy of the message.
+
+DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=yahoo.com; s=s2048; t=1591783876; bh=kXD6TZuQDjqZf/AEAJ2HCX32Titkj3IywytG6GSm4yQ=; h=Date:From:To:Subject:References:From:Subject; b=PexnIBxnVSkyutv/jVn+Wlt5QPuVHnWleP3baWlvqkXaKR51pCaZIoGJggMEonitEeJkcYpgplBawEBz0hlGf63NqOHHkxUk6U1olwc0y9kj5kDH5lrORgXrf7U4z5t+i5n0II36MxbG9n/5tDRXoiabLFoWx//3O9x/ZJvVWPlq8RBFzVG8aoL2TkBQAVcqX/vW1f3WJuopaUYWB4AzR3TyuC2kVQPFqbPMk+G/VmyuZFmZesh1bSBva5hdKYLxES5v8hvTIDRqSYZrnZ4V67MqicZ8m229Xf4Za8qOE+a2Z+Vv5VrQ+CjjPZwRAcmKHkLY80VCSkpeL2R2YG4APg==
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+From: Delta Chat Test <alice@yahoo.com>
+To: "haeclirth.sinoenrat@yahoo.com" <haeclirth.sinoenrat@yahoo.com>
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+<html><head></head><body><div class="yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div dir="ltr" data-setdir="false">test<br></div></div></body></html>
+------=_Part_3657930_145367320.1591783872935--
Author	SHA1	Message	Date
B. Petersen	31a5811241	bump version to 1.38	2020-06-20 19:16:07 +02:00
B. Petersen	cd1f5bf229	update changelog for 1.38	2020-06-20 19:09:33 +02:00
bjoern	632fc19f41	Merge pull request #1645 from deltachat/correct-seen give correct "fresh" flag to calc_sort_timestamp()	2020-06-20 19:05:34 +02:00
B. Petersen	7ad95ea165	give correct "fresh" flag to calc_sort_timestamp() for "fresh" messages, calc_sort_timestamp() makes sure, the sorting timestamp is not less than the last-non-fresh message. this commit fixes the "fresh" state we give to calc_sort_timestamp(), it just uses the message-state we've already calculated. the old assumption, that unseen messages are always fresh is wrong as this "seen" flag just comes from an imap-flag that is not set for self-sent messages. therefore, in a multi-device-setup, things are totally messed up. (the bug was probably in there since a long time, however did not came to light until the async-move)	2020-06-20 18:36:09 +02:00
Floris Bruynooghe	9d7b756ddb	Unify some testing interfaces This tidies up our testing tools a little bit. We had several functions which through various changes ended up doing the same and some more which did very similar stuff, so I merged them to have things simpler. Also moved towards methods on the TestContext struct while cleaning this up anyway, seems like this structure is going to stay around for a bit anyway. The intersting change is in `test_utils.rs`, everything else is just updating callers. A few tests used example.org which I moved to example.com to be able to re-use more configuration of the test context.	2020-06-20 14:37:41 +02:00
bjoern	73412db267	Merge pull request #1644 from deltachat/stop-time-in-repl print time needed to build chatlist in repl tool	2020-06-20 13:07:50 +02:00
B. Petersen	059a7bcd7f	print time needed to build chatlist in repl tool the chatlist is the most complicated list to get from sql and is also the most used list, so it makes sense to keep an eye on the timing of that.	2020-06-20 00:56:43 +02:00
bjoern	3e47564b2f	Merge pull request #1643 from deltachat/prep-1.37 prepare 1.37	2020-06-19 21:54:04 +02:00
B. Petersen	d8be0cdf35	bump version to 1.37	2020-06-19 21:32:47 +02:00
B. Petersen	26a44b6d32	update changelog for 1.37	2020-06-19 21:31:34 +02:00
bjoern	12eacaae36	Merge pull request #1641 from deltachat/oauth2-provider-db get Oauth2-information from provider-db	2020-06-19 21:13:36 +02:00
B. Petersen	2d8148a1a3	make use of new oauth2-authorizer information in the provider-db	2020-06-19 17:06:31 +02:00
B. Petersen	916007ed2d	run update.py	2020-06-19 16:38:03 +02:00
B. Petersen	b91b88e11b	let update.py add information of oauth2-authorizer	2020-06-19 16:37:43 +02:00
bjoern	b6c0f44608	Merge pull request #1635 from deltachat/fix-chatlist-hidden fix getting last message for chatlist, avoid empty summaries	2020-06-19 13:36:08 +02:00
Alexander Krotov	2a623541d7	configure/mod.rs: forbid indexing and slicing	2020-06-19 14:24:53 +03:00
Alexander Krotov	0007e93e80	scheduler: forbid indexing and slicing	2020-06-19 14:24:53 +03:00
Alexander Krotov	c655fd8a64	contact: forbid indexing and slicing	2020-06-19 14:24:53 +03:00
Alexander Krotov	ad531876fd	contact: simplify name normalization This removes one indexing operation and reduces surprises when comma means something other than first name and last name separator.	2020-06-19 14:24:53 +03:00
Alexander Krotov	53bee68acb	smtp/mod.rs: forbid indexing and slicing	2020-06-19 00:56:01 +03:00
Alexander Krotov	b5400cf551	Refactor imap/mod.rs to avoid indexing Also replace assert! with debug_assert!	2020-06-19 00:56:01 +03:00
B. Petersen	491af1b583	fix getting last message for chatlist the last message shown in a chatlist is the one with the largets timestamp that is not hidden. in the past, we calcualted the last timestamp using a subquery and uses that timestamp to finally get the message. this may fail when there are two messages with the same max. timestamp. with this fix, we return the id from the subquery and use that (the subquery already filters by hidden etc.) in practise, by time-smearing, usually delta-chat avoids messages from the same device having the same timestamp - however, this may not be true for multi-device and/or read-receipts. i have not seen this error all the years, however, it happens with the async move several times - maybe because things are just sent faster and things become more probabe.	2020-06-18 14:46:04 +02:00
bjoern	5b1d06cb28	Merge pull request #1634 from deltachat/typo-faild fix typo	2020-06-18 03:02:23 +02:00
B. Petersen	7df5195d77	fix typo	2020-06-18 00:31:40 +02:00
dignifiedquire	baff13ecab	fix warnings and bugs, noticed on nightly	2020-06-17 19:27:27 +02:00
bjoern	a7bf05bebb	Merge pull request #1629 from deltachat/prep-1.36 prepare 1.36	2020-06-17 16:06:21 +02:00
B. Petersen	aa9b5da1c0	bump version to 1.36	2020-06-17 15:45:38 +02:00
B. Petersen	dfd705f9c6	update changelog for 1.36.0	2020-06-17 15:45:37 +02:00
bjoern	472c0bcea5	Merge pull request #1631 from deltachat/fix-securejoin s/fingerprint/fingerprint.hex()/	2020-06-17 15:45:11 +02:00
Hocuri	8c2af132c8	Sync heuristically_parse_ndn() and maybe_ndn in prefetch_should_download()	2020-06-17 12:42:40 +02:00
Hocuri	79145576ab	s/fingerprint/fingerpring.hex()/	2020-06-17 11:08:38 +02:00
Hocuri	8ca55b0f60	clippy	2020-06-17 10:58:27 +02:00
Hocuri	74cb4ca1cd	Check for mime_parser.has_chat_version() instead of is_dc_message != MessengerMessage::No and avoid passing is_dc_message around, this will save us output &mut argument and simplify the logic.	2020-06-17 10:58:27 +02:00
Hocuri	351e5dc6f3	Add Python test	2020-06-17 10:58:27 +02:00
Hocuri	4eee4a08e7	Mark read receipts as read	2020-06-17 10:58:27 +02:00
Maykel Moya	b5fa0f8924	Add support for G Suite domains Do a lookup based on domain's MX servers. G Suite domains are expected to have at least 'aspmx.l.google.com' listed in MXs. See https://support.google.com/a/answer/140034 fixes #1425	2020-06-17 11:50:46 +03:00
Alexander Krotov	baba91c054	pgp: refactor and document pk_decrypt() Avoid unnecessary indexing, decompress only once and check if the message is Signed before trying to verify it.	2020-06-17 11:48:29 +03:00
Hocuri	40c9c2752b	Parse ndns from Tiscali	2020-06-17 10:39:05 +02:00
bjoern	f4a1a526f5	Merge pull request #1628 from deltachat/lto Re-enable lto=true for release builds	2020-06-16 22:58:54 +02:00
Alexander Krotov	7d80179ed1	Re-enable lto=true for release builds	2020-06-16 23:12:07 +03:00
bjoern	71080ed6d5	Merge pull request #1620 from deltachat/update-docs update docs	2020-06-16 18:41:00 +02:00
bjoern	44037dd711	Update deltachat-ffi/deltachat.h Co-authored-by: Hocuri <hocuri@gmx.de>	2020-06-15 23:36:22 +02:00
B. Petersen	bc275d8670	update docs	2020-06-15 23:36:22 +02:00
Hocuri	eb29f9c4c1	Parse testrun NDNs	2020-06-15 16:20:23 +02:00
bjoern	6340b278d9	Merge pull request #1619 from deltachat/rotate-images respect image orientation from exif on recoding	2020-06-15 11:37:31 +02:00
B. Petersen	519e1c1cd0	warn about unused orientation values, add a comment about the orientation values	2020-06-15 02:18:48 +02:00
B. Petersen	d2320394ca	convert exif orientation to desired pixel rotation	2020-06-15 01:13:37 +02:00
B. Petersen	9307f2d49f	rotate image pixels, prototype a function to get exif data	2020-06-15 01:13:37 +02:00
B. Petersen	7362941245	add kamadak-exif crate	2020-06-15 00:32:13 +02:00
Alexander Krotov	f7c7f414ed	refactor: remove .unwrap() from Peerstate.has_verified_key()	2020-06-15 00:47:25 +03:00
Hocuri	23d6012c1f	Start parsing ndns (#1552 ) Fix #1478 I changed my original plans a little because I had so many extra ideas and then sorted that I should rather look at actual NDNs and look what is necessary to parse them: - Recognize NDNs by ~the sender address, which is in a regex the providers database. The problem with heuristics would be that someone could send fake-NDNs and mark messages as failed.~ the standard ("report/delivery-status") and heuristics ("subject contains 'fail' and sender contains 'daemon'"). If there is a valid Message-ID, then rely on that this is an NDN (of course, generally someone might try to find out a Message-ID and send a fake NDN). - ~Look for `In-Reply-To`~ (only Gmail did this and Gmail uses rfc822 anyway.) - ~Look for a mimepart `message/delivery-status`, which might contain a `X-Original-Message-ID`~ (only Gmail did this and Gmail uses rfc822, too, anyway.). - Search through the body and look for a line `Message-ID: *` (remember to remove `<`, `>`), in the hope that that's the original header - Look for a mime-part containing the string `rfc822`, which will contain the original header. Parse them with Mailparse and look for `Message-ID`.	2020-06-13 17:44:29 +02:00
Hocuri	15b30ceed1	check for sender mailer-daemon as link2xt proposed	2020-06-13 17:29:38 +02:00
Hocuri	45b871f76d	Look at From instead of Subject and ContentType in prefetch_should_download.	2020-06-13 14:18:16 +02:00
Hocuri	9f1112833f	let prefetch_should_download() check if it might be an ndn	2020-06-13 12:06:30 +02:00
B. Petersen	fc88bff32f	make clippy happy	2020-06-13 10:18:18 +02:00
Hocuri	bbf049e95b	string	2020-06-13 10:18:18 +02:00
Hocuri	52dfa9b536	Renaming, comment	2020-06-13 10:18:18 +02:00
Hocuri	1fe85dfb3c	more functional	2020-06-13 10:18:17 +02:00
Hocuri	27ff1c4a75	check in heuristically_parse_ndn() that rfc724_mid_exists() so that we do not ignore emails because we erreneously thought that it was an ndn	2020-06-13 10:18:17 +02:00
Hocuri	adf4035775	rename reports	2020-06-13 10:18:17 +02:00
Hocuri	990c80cedf	lots of small fixes from the reviews	2020-06-13 10:18:17 +02:00
Hocuri	8ebce0c861	warn instead of error	2020-06-13 10:18:16 +02:00
Hocuri	ffb6a84b1f	Warn instead of error	2020-06-13 10:18:16 +02:00
Hocuri	c60ec00aac	Oops #2 , adapt DC_STR_COUNT in deltachat.h	2020-06-13 10:18:16 +02:00
Hocuri	dd3f81a556	Oops, add FAILED_SENDING_TO to deltachat.h	2020-06-13 10:18:16 +02:00
Hocuri	8938cb2573	clippy	2020-06-13 10:18:16 +02:00
Hocuri	995660020b	rm unused aol_ndn.eml (aol's ndns are very similar to these of Yahoo)	2020-06-13 10:18:15 +02:00
Hocuri	7997e7dde4	remove println	2020-06-13 10:18:15 +02:00
Hocuri	20ad98d168	typo	2020-06-13 10:18:15 +02:00
Hocuri	c827c9d209	Add yahoo test	2020-06-13 10:18:15 +02:00
Hocuri	bde97b20e9	Repair getting x-failed-recipients header, all tests passing now	2020-06-13 10:18:15 +02:00
Hocuri	777df24c75	Make the gmx test pass	2020-06-13 10:18:14 +02:00
Hocuri	e1711855cc	Make the posteo test pass	2020-06-13 10:18:14 +02:00
Hocuri	3899d70b3c	I hate SQL	2020-06-13 10:18:14 +02:00
Hocuri	e7aee5b4f4	add gmx and posteo tests	2020-06-13 10:18:14 +02:00
Hocuri	bd2a7a3d40	Correct failed recipient	2020-06-13 10:18:13 +02:00
Hocuri	2e59d5674e	fix sql	2020-06-13 10:18:13 +02:00
Hocuri	98b5f768b6	Improve test, fixed compile errors from rebasing	2020-06-13 10:18:13 +02:00
Hocuri	b7d0f29002	Add test-data/message/gmx_ndn.eml	2020-06-13 10:18:13 +02:00
Hocuri	df9cb5e3b8	Fix error in message info	2020-06-13 10:18:12 +02:00
Hocuri	a30486112f	Add test	2020-06-13 10:18:12 +02:00
Hocuri	016b96e30e	Fix migration	2020-06-13 10:18:12 +02:00
Hocuri	6b763bf417	Return true for MessageState::OutMdnRcvd.can_fail() because it could be a group message and only some recipients failed	2020-06-13 10:18:12 +02:00
Hocuri	6ded0d3bc1	Do not show error messages in chat	2020-06-13 10:18:12 +02:00
Hocuri	f0837cfa73	Repair errors saved for messages	2020-06-13 10:18:11 +02:00
Hocuri	8350729cbb	Improve errors	2020-06-13 10:18:11 +02:00
Hocuri	3757e5dca1	Try to add decent error msg (doesnt work yet)	2020-06-13 10:18:11 +02:00
Hocuri	f02c17cae4	Parse standard ndns (e.g. Gmail)	2020-06-13 10:18:11 +02:00