* add a test for xing mailinglists
* strip long hash-prefixes from mailinglist name if we got the name from the List-Id as a last resort
* add a test for newsletter@ mailinglists
these mailinglists have the list-name in `From:`
and can be detected by addresses starting with `newsletter@`.
* if not list-name is set, use the `From:` name for addresses starting with `newsletter@`
this is similar to what we do with `notifications@`
* Update src/dc_receive_imf.rs
Co-authored-by: Hocuri <hocuri@gmx.de>
* add an example to the regex
Co-authored-by: Hocuri <hocuri@gmx.de>
bffb41326c