To observe a potential problem with the group feature

[webratte]

There is a article which describe a problem (in this case for Delta Chat) with group.

See here, page 2 "Nutzer ohne Delta Chat und Gruppen: Spam-Gefahr und Daten-GAU" https://www.teltarif.de/delta-chat-messenger-e-mail-test-spam/news/77788.html

I think you should have attention for this. Maybe add a "Remove me from list" link inside the signature. The signature is only visible for regular mail and would not disturb OXCoi or Delta Chat users.

[robert-virkus]

Many thanks for the note. In the comments BCC is as a solution discussed, however this cannot really work, at least not for normal groups where everybody is expected to be able to reply.

For read-only groups using BCC makes sense from my point of view.

[webratte]

That's why I opened a feature request "Broadcast messages" 😉