diff --git a/Cargo.lock b/Cargo.lock
index c4643aa90..f111d9e96 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -50,11 +50,6 @@ dependencies = [
  "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "anyhow"
-version = "1.0.25"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "arrayref"
 version = "0.3.5"
@@ -347,11 +342,6 @@ name = "bufstream"
 version = "0.1.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "bumpalo"
-version = "2.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "byte-tools"
 version = "0.3.1"
@@ -669,7 +659,7 @@ dependencies = [
  "indexmap 1.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)",
  "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)",
+ "lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)",
  "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
  "mailparse 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
  "native-tls 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
@@ -1412,14 +1402,6 @@ name = "itoa"
 version = "0.4.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "js-sys"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "keccak"
 version = "0.1.0"
@@ -1453,25 +1435,23 @@ dependencies = [
 [[package]]
 name = "lettre"
 version = "0.9.2"
-source = "git+https://github.com/deltachat/lettre?branch=feat/mail#00ba9db544059ddd60048f0b85d5052e4bf605da"
+source = "git+https://github.com/deltachat/lettre?branch=native_tls#6453051a470e020a02228dc62f7aed2d9c90cf01"
 dependencies = [
  "fast_chemail 0.9.6 (registry+https://github.com/rust-lang/crates.io-index)",
  "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "rustls-connector 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
 name = "lettre_email"
 version = "0.9.2"
-source = "git+https://github.com/deltachat/lettre?branch=feat/mail#00ba9db544059ddd60048f0b85d5052e4bf605da"
+source = "git+https://github.com/deltachat/lettre?branch=native_tls#6453051a470e020a02228dc62f7aed2d9c90cf01"
 dependencies = [
  "base64 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)",
  "email 0.0.21 (git+https://github.com/deltachat/rust-email)",
- "lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)",
+ "lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)",
  "mime 0.3.14 (registry+https://github.com/rust-lang/crates.io-index)",
  "time 0.1.42 (registry+https://github.com/rust-lang/crates.io-index)",
- "uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)",
+ "uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
 [[package]]
@@ -2383,20 +2363,6 @@ dependencies = [
  "winreg 0.6.2 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "ring"
-version = "0.16.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cc 1.0.48 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)",
- "spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "web-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "ripemd160"
 version = "0.8.0"
@@ -2461,28 +2427,6 @@ dependencies = [
  "semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "rustls"
-version = "0.16.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "base64 0.10.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "sct 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "rustls-connector"
-version = "0.8.1"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "rustls 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "rusty-fork"
 version = "0.2.2"
@@ -2559,15 +2503,6 @@ name = "scopeguard"
 version = "1.0.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "sct"
-version = "0.6.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "security-framework"
 version = "0.3.4"
@@ -2736,11 +2671,6 @@ dependencies = [
  "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "sourcefile"
-version = "0.1.4"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "spin"
 version = "0.5.2"
@@ -3159,11 +3089,6 @@ dependencies = [
  "traitobject 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
-[[package]]
-name = "untrusted"
-version = "0.7.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
 [[package]]
 name = "url"
 version = "1.7.2"
@@ -3206,6 +3131,14 @@ dependencies = [
  "rand 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)",
 ]
 
+[[package]]
+name = "uuid"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+dependencies = [
+ "rand 0.7.2 (registry+https://github.com/rust-lang/crates.io-index)",
+]
+
 [[package]]
 name = "vcpkg"
 version = "0.2.8"
@@ -3259,107 +3192,6 @@ name = "wasi"
 version = "0.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 
-[[package]]
-name = "wasm-bindgen"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "cfg-if 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-macro 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "wasm-bindgen-backend"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "bumpalo 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "wasm-bindgen-macro"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-macro-support 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "wasm-bindgen-macro-support"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "wasm-bindgen-shared"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-
-[[package]]
-name = "wasm-bindgen-webidl"
-version = "0.2.55"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "heck 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)",
- "log 0.4.8 (registry+https://github.com/rust-lang/crates.io-index)",
- "proc-macro2 1.0.6 (registry+https://github.com/rust-lang/crates.io-index)",
- "quote 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)",
- "syn 1.0.11 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "web-sys"
-version = "0.3.32"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)",
- "js-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)",
- "sourcefile 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
- "wasm-bindgen-webidl 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "webpki"
-version = "0.21.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)",
- "untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "webpki-roots"
-version = "0.18.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
-[[package]]
-name = "weedle"
-version = "0.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-dependencies = [
- "nom 4.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
-]
-
 [[package]]
 name = "winapi"
 version = "0.2.8"
@@ -3483,7 +3315,6 @@ dependencies = [
 "checksum aesni 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2f70a6b5f971e473091ab7cfb5ffac6cde81666c4556751d8d5620ead8abf100"
 "checksum aho-corasick 0.7.6 (registry+https://github.com/rust-lang/crates.io-index)" = "58fb5e95d83b38284460a5fda7d6470aa0b8844d283a0b614b8535e880800d2d"
 "checksum ansi_term 0.11.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ee49baf6cb617b853aa8d93bf420db2383fab46d314482ca2803b40d5fde979b"
-"checksum anyhow 1.0.25 (registry+https://github.com/rust-lang/crates.io-index)" = "9267dff192e68f3399525901e709a48c1d3982c9c072fa32f2127a0cb0babf14"
 "checksum arrayref 0.3.5 (registry+https://github.com/rust-lang/crates.io-index)" = "0d382e583f07208808f6b1249e60848879ba3543f57c32277bf52d69c2f0f0ee"
 "checksum arrayvec 0.4.12 (registry+https://github.com/rust-lang/crates.io-index)" = "cd9fd44efafa8690358b7408d253adf110036b88f55672a933f01d616ad9b1b9"
 "checksum arrayvec 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "cff77d8686867eceff3105329d4698d96c2391c176d5d03adc90c7389162b5b8"
@@ -3515,7 +3346,6 @@ dependencies = [
 "checksum broadcaster 0.2.6 (registry+https://github.com/rust-lang/crates.io-index)" = "07a1446420a56f1030271649ba0da46d23239b3a68c73591cea5247f15a788a0"
 "checksum buf_redux 0.8.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b953a6887648bb07a535631f2bc00fbdb2a2216f135552cb3f534ed136b9c07f"
 "checksum bufstream 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "40e38929add23cdf8a366df9b0e088953150724bcbe5fc330b0d8eb3b328eec8"
-"checksum bumpalo 2.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ad807f2fc2bf185eeb98ff3a901bd46dc5ad58163d0fa4577ba0d25674d71708"
 "checksum byte-tools 0.3.1 (registry+https://github.com/rust-lang/crates.io-index)" = "e3b5ca7a04898ad4bcd41c90c5285445ff5b791899bb1b0abdd2a2aa791211d7"
 "checksum bytecount 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b92204551573580e078dc80017f36a213eb77a0450e4ddd8cfa0f3f2d1f0178f"
 "checksum byteorder 1.3.2 (registry+https://github.com/rust-lang/crates.io-index)" = "a7c3dd8985a7111efc5c80b44e23ecdd8c007de8ade3b96595387e812b957cf5"
@@ -3630,13 +3460,12 @@ dependencies = [
 "checksum iovec 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "b2b3ea6ff95e175473f8ffe6a7eb7c00d054240321b84c57051175fe3c1e075e"
 "checksum itertools 0.8.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f56a2d0bc861f9165be4eb3442afd3c236d8a98afd426f65d92324ae1091a484"
 "checksum itoa 0.4.4 (registry+https://github.com/rust-lang/crates.io-index)" = "501266b7edd0174f8530248f87f99c88fbe60ca4ef3dd486835b8d8d53136f7f"
-"checksum js-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)" = "1c840fdb2167497b0bd0db43d6dfe61e91637fa72f9d061f8bd17ddc44ba6414"
 "checksum keccak 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "67c21572b4949434e4fc1e1978b99c5f77064153c59d998bf13ecd96fb5ecba7"
 "checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
 "checksum kv-log-macro 1.0.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8c54d9f465d530a752e6ebdc217e081a7a614b48cb200f6f0aee21ba6bc9aabb"
 "checksum lazy_static 1.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e2abad23fbc42b3700f2f279844dc832adb2b2eb069b2df918f455c4e18cc646"
-"checksum lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)" = "<none>"
-"checksum lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=feat/mail)" = "<none>"
+"checksum lettre 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)" = "<none>"
+"checksum lettre_email 0.9.2 (git+https://github.com/deltachat/lettre?branch=native_tls)" = "<none>"
 "checksum lexical-core 0.4.6 (registry+https://github.com/rust-lang/crates.io-index)" = "2304bccb228c4b020f3a4835d247df0a02a7c4686098d4167762cfbbe4c5cb14"
 "checksum libc 0.2.66 (registry+https://github.com/rust-lang/crates.io-index)" = "d515b1f41455adea1313a4a2ac8a8a477634fbae63cc6100e3aebb207ce61558"
 "checksum libm 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "c7d73b3f436185384286bd8098d17ec07c9a7d2388a6599f824d8502b529702a"
@@ -3733,15 +3562,12 @@ dependencies = [
 "checksum rental 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "8545debe98b2b139fb04cad8618b530e9b07c152d99a5de83c860b877d67847f"
 "checksum rental-impl 0.5.5 (registry+https://github.com/rust-lang/crates.io-index)" = "475e68978dc5b743f2f40d8e0a8fdc83f1c5e78cbf4b8fa5e74e73beebc340de"
 "checksum reqwest 0.9.22 (registry+https://github.com/rust-lang/crates.io-index)" = "2c2064233e442ce85c77231ebd67d9eca395207dec2127fe0bbedde4bd29a650"
-"checksum ring 0.16.9 (registry+https://github.com/rust-lang/crates.io-index)" = "6747f8da1f2b1fabbee1aaa4eb8a11abf9adef0bf58a41cee45db5d59cecdfac"
 "checksum ripemd160 0.8.0 (registry+https://github.com/rust-lang/crates.io-index)" = "ad5112e0dbbb87577bfbc56c42450235e3012ce336e29c5befd7807bd626da4a"
 "checksum rsa 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "6ed8692d8e0ea3baae03f0f32ecfc13a6c6f1f85fcd6d9fdefcdf364e70f4df9"
 "checksum rusqlite 0.20.0 (registry+https://github.com/rust-lang/crates.io-index)" = "2a194373ef527035645a1bc21b10dc2125f73497e6e155771233eb187aedd051"
 "checksum rust-argon2 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "4ca4eaef519b494d1f2848fc602d18816fed808a981aedf4f1f00ceb7c9d32cf"
 "checksum rustc-demangle 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "4c691c0e608126e00913e33f0ccf3727d5fc84573623b8d65b2df340b5201783"
 "checksum rustc_version 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "138e3e0acb6c9fb258b19b67cb8abd63c00679d2851805ea151465464fe9030a"
-"checksum rustls 0.16.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b25a18b1bf7387f0145e7f8324e700805aade3842dd3db2e74e4cdeb4677c09e"
-"checksum rustls-connector 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "58255a0cb2043d0cc58b2a4208412b8168fc78451c9427816bb094fcf996fac1"
 "checksum rusty-fork 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "3dd93264e10c577503e926bd1430193eeb5d21b059148910082245309b424fae"
 "checksum rustyline 4.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "0f47ea1ceb347d2deae482d655dc8eef4bd82363d3329baffa3818bd76fea48b"
 "checksum ryu 1.0.2 (registry+https://github.com/rust-lang/crates.io-index)" = "bfa8506c1de11c9c4e4c38863ccbe02a305c8188e85a05a784c9e11e1c3910c8"
@@ -3751,7 +3577,6 @@ dependencies = [
 "checksum schannel 0.1.16 (registry+https://github.com/rust-lang/crates.io-index)" = "87f550b06b6cba9c8b8be3ee73f391990116bf527450d2556e9b9ce263b9a021"
 "checksum scheduled-thread-pool 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "f5de7bc31f28f8e6c28df5e1bf3d10610f5fdc14cc95f272853512c70a2bd779"
 "checksum scopeguard 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b42e15e59b18a828bbf5c58ea01debb36b9b096346de35d941dcb89009f24a0d"
-"checksum sct 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "e3042af939fca8c3453b7af0f1c66e533a15a86169e39de2657310ade8f98d3c"
 "checksum security-framework 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "8ef2429d7cefe5fd28bd1d2ed41c944547d4ff84776f5935b456da44593a16df"
 "checksum security-framework-sys 0.3.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e31493fc37615debb8c5090a7aeb4a9730bc61e77ab10b9af59f1a202284f895"
 "checksum semver 0.9.0 (registry+https://github.com/rust-lang/crates.io-index)" = "1d7eb9ef2c18661902cc47e535f9bc51b78acd254da71d375c2f6720d9a40403"
@@ -3770,7 +3595,6 @@ dependencies = [
 "checksum smallvec 1.0.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4ecf3b85f68e8abaa7555aa5abdb1153079387e60b718283d732f03897fcfc86"
 "checksum snafu 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "41207ca11f96a62cd34e6b7fdf73d322b25ae3848eb9d38302169724bb32cf27"
 "checksum snafu-derive 0.6.0 (registry+https://github.com/rust-lang/crates.io-index)" = "4c5e338c8b0577457c9dda8e794b6ad7231c96e25b1b0dd5842d52249020c1c0"
-"checksum sourcefile 0.1.4 (registry+https://github.com/rust-lang/crates.io-index)" = "4bf77cb82ba8453b42b6ae1d692e4cdc92f9a47beaf89a847c8be83f4e328ad3"
 "checksum spin 0.5.2 (registry+https://github.com/rust-lang/crates.io-index)" = "6e63cff320ae2c57904679ba7cb63280a3dc4613885beafb148ee7bf9aa9042d"
 "checksum stable_deref_trait 1.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "dba1a27d3efae4351c8051072d619e3ade2820635c3958d826bfea39d59b54c8"
 "checksum static_assertions 0.3.4 (registry+https://github.com/rust-lang/crates.io-index)" = "7f3eb36b47e512f8f1c9e3d10c2c1965bc992bd9cdb024fa581e2194501c83d3"
@@ -3820,12 +3644,12 @@ dependencies = [
 "checksum unicode-xid 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "fc72304796d0818e357ead4e000d19c9c174ab23dc11093ac919054d20a6a7fc"
 "checksum unicode-xid 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "826e7639553986605ec5979c7dd957c7895e93eabed50ab2ffa7f6128a75097c"
 "checksum unsafe-any 0.4.2 (registry+https://github.com/rust-lang/crates.io-index)" = "f30360d7979f5e9c6e6cea48af192ea8fab4afb3cf72597154b8f08935bc9c7f"
-"checksum untrusted 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "60369ef7a31de49bcb3f6ca728d4ba7300d9a1658f94c727d4cab8c8d9f4aece"
 "checksum url 1.7.2 (registry+https://github.com/rust-lang/crates.io-index)" = "dd4e7c0d531266369519a4aa4f399d748bd37043b00bde1e4ff1f60a120b355a"
 "checksum url 2.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "75b414f6c464c879d7f9babf951f23bc3743fb7313c081b2e6ca719067ea9d61"
 "checksum utf8parse 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "8772a4ccbb4e89959023bc5b7cb8623a795caa7092d99f3aa9501b9484d4557d"
 "checksum uuid 0.6.5 (registry+https://github.com/rust-lang/crates.io-index)" = "e1436e58182935dcd9ce0add9ea0b558e8a87befe01c1a301e6020aeb0876363"
 "checksum uuid 0.7.4 (registry+https://github.com/rust-lang/crates.io-index)" = "90dbc611eb48397705a6b0f6e917da23ae517e4d127123d2cf7674206627d32a"
+"checksum uuid 0.8.1 (registry+https://github.com/rust-lang/crates.io-index)" = "9fde2f6a4bea1d6e007c4ad38c6839fa71cbb63b6dbf5b595aa38dc9b1093c11"
 "checksum vcpkg 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "3fc439f2794e98976c88a2a2dafce96b930fe8010b0a256b3c2199a773933168"
 "checksum version_check 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "914b1a6776c4c929a602fafd8bc742e06365d4bcbe48c30f9cca5824f70dc9dd"
 "checksum version_check 0.9.1 (registry+https://github.com/rust-lang/crates.io-index)" = "078775d0255232fb988e6fccf26ddc9d1ac274299aaedcedce21c6f72cc533ce"
@@ -3834,16 +3658,6 @@ dependencies = [
 "checksum walkdir 2.2.9 (registry+https://github.com/rust-lang/crates.io-index)" = "9658c94fa8b940eab2250bd5a457f9c48b748420d71293b165c8cdbe2f55f71e"
 "checksum want 0.2.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b6395efa4784b027708f7451087e647ec73cc74f5d9bc2e418404248d679a230"
 "checksum wasi 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "b89c3ce4ce14bdc6fb6beaf9ec7928ca331de5df7e5ea278375642a2f478570d"
-"checksum wasm-bindgen 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "29ae32af33bacd663a9a28241abecf01f2be64e6a185c6139b04f18b6385c5f2"
-"checksum wasm-bindgen-backend 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "1845584bd3593442dc0de6e6d9f84454a59a057722f36f005e44665d6ab19d85"
-"checksum wasm-bindgen-macro 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "87fcc747e6b73c93d22c947a6334644d22cfec5abd8b66238484dc2b0aeb9fe4"
-"checksum wasm-bindgen-macro-support 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "3dc4b3f2c4078c8c4a5f363b92fcf62604c5913cbd16c6ff5aaf0f74ec03f570"
-"checksum wasm-bindgen-shared 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "ca0b78d6d3be8589b95d1d49cdc0794728ca734adf36d7c9f07e6459508bb53d"
-"checksum wasm-bindgen-webidl 0.2.55 (registry+https://github.com/rust-lang/crates.io-index)" = "3126356474ceb717c8fb5549ae387c9fbf4872818454f4d87708bee997214bb5"
-"checksum web-sys 0.3.32 (registry+https://github.com/rust-lang/crates.io-index)" = "98405c0a2e722ed3db341b4c5b70eb9fe0021621f7350bab76df93b09b649bbf"
-"checksum webpki 0.21.0 (registry+https://github.com/rust-lang/crates.io-index)" = "d7e664e770ac0110e2384769bcc59ed19e329d81f555916a6e072714957b81b4"
-"checksum webpki-roots 0.18.0 (registry+https://github.com/rust-lang/crates.io-index)" = "91cd5736df7f12a964a5067a12c62fa38e1bd8080aff1f80bc29be7c80d19ab4"
-"checksum weedle 0.10.0 (registry+https://github.com/rust-lang/crates.io-index)" = "3bb43f70885151e629e2a19ce9e50bd730fd436cfd4b666894c9ce4de9141164"
 "checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
 "checksum winapi 0.3.8 (registry+https://github.com/rust-lang/crates.io-index)" = "8093091eeb260906a183e6ae1abdba2ef5ef2257a21801128899c3fc699229c6"
 "checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
diff --git a/Cargo.toml b/Cargo.toml
index 79b6da127..fb84631d7 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -19,7 +19,7 @@ num-derive = "0.3.0"
 num-traits = "0.2.6"
 async-smtp = { git = "https://github.com/async-email/async-smtp", branch = "master" }
 email = { git = "https://github.com/deltachat/rust-email", branch = "master" }
-lettre_email = { git = "https://github.com/deltachat/lettre", branch = "feat/mail" }
+lettre_email = { git = "https://github.com/deltachat/lettre", branch = "native_tls" }
 async-imap = { git = "https://github.com/async-email/async-imap", branch="native_tls", default-features = false, features = ["tls_native"] }
 async-native-tls = "0.1.1"
 async-std = { version = "1.0", features = ["unstable"] }