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An option to solve this properly would be to implement a dedicated UI for verification problem #4999 and then display downloaded message in place, not break the verification state of...

The messages are not suspicious, large messages are sent by non-attackers all the time and in most cases when you download them they have a valid signature.

Current testing results is that Thunderbird stores `From` and `To` in protected headers but does not extract them, at least th display name from `From`. K-9 aka Thunderbird for Android...

We can implement "Legacy Display Element" from the new standard https://datatracker.ietf.org/doc/draft-ietf-lamps-header-protection/, then there is no need to wait for Thunderbird and K-9 (aka Thunderbird for Android) to support it. Original...

I think we better wait until https://datatracker.ietf.org/doc/draft-ietf-lamps-header-protection/ is more stable, it uses new `Content-Type` parameter `hp` instead of `protected-headers="v1"` of https://datatracker.ietf.org/doc/draft-autocrypt-lamps-protected-headers/ We can add some support for reception of such...

Maybe this message is delayed and arrives later?

Recent log: ``` 2024-06-04T07:40:09.7846720Z =================================== FAILURES =================================== 2024-06-04T07:40:09.7848950Z __________________ test_verified_group_vs_delete_server_after __________________ 2024-06-04T07:40:09.7853610Z [gw1] darwin -- Python 3.12.3 /Users/runner/work/deltachat-core-rust/deltachat-core-rust/python/.tox/py/bin/python 2024-06-04T07:40:09.7855390Z 2024-06-04T07:40:09.7856380Z acfactory = 2024-06-04T07:40:09.7858200Z tmp_path = PosixPath('/private/var/folders/lr/439_fwvd3m76p9vy50d57kcc0000gn/T/pytest-of-runner/pytest-0/popen-gw1/test_verified_group_vs_delete_0') 2024-06-04T07:40:09.7859930Z lp = 2024-06-04T07:40:09.7860530Z...

ac2 expunges messages from INBOX, then goes IDLE but does not notice "member added" message which should be there: ``` 2024-06-04T07:40:09.8312930Z 17.46 [events-ac2] INFO src/imap.rs:747: 0 mails read from "INBOX"....

The problem is likely that message arrives while the folder is closed and we don't notice that message arrived when we `SELECT` the folder back. Here we call `fetch_move_delete`: https://github.com/deltachat/deltachat-core-rust/blob/48b4cfc247c29c00048a08a3fc16af8b34fe4b82/src/scheduler.rs#L590...

> Converting to ESM would mean desktop needs a new refactoring as with ESM it needs to be imported via `import` instead of `require`, which makes the code async and...