Is it possible to have Delta Chat groups with mixed Delta Chat users and classical email user who use a classical email client? If yes, how do classical email users address the group? Delta Chat version 2.49 (Linux), 2.51 (Android)

No, it’s not possible. Either all messages are encrypted, or none.

Somewhat related: [image] Document the minimum requirements necessary for chatmail interoperability Chatmail Relays The effort of documenting all above mentioned implementation details and publishing a full independent implementation based on that in a clean ro…

And it’s not possible to have a group with no encrypted messages at all?

The question is two-faced. You may focus on clients lacking any kind of encryption, but note that you could maintain encrypted contacts outside DC clients as well. I think as long as you patched those clients (or added the group ID header manually through the UI), such a client might be able to chat…

It is possible, but only for “classic” (non-Chatmail) profiles (e.g. Gmail): [image]

Ugh, I didn’t quite get this at first. So now I did some testing, and indeed it works! However, when the mail-account(s) respond with a mail, that won’t land in the original group, right? At least it didn’t in my test. Is there a way to make that work, too? I’m checking for alternatives to WhatsApp …

[image] schrotie: However, when the mail-account(s) respond with a mail, that won’t land in the original group, right? At least it didn’t in my test. I am pretty sure that this should work, as long as the email is a proper “reply”. I’m not completely sure what qualifies as such. Probably the I…

Well, I tried, original message ID from delta chat and In-Reply-To header (from Evolution) were identical but the message did not land in the group in Delta-Chat, but in a DM Chat with the user with that Email address … Ugh, nope, you’re right, it works. Evolution did not send to another email addr…

Groups with clasic email users (no DC-client)?

Mutual Help

ian June 10, 2026, 11:13am 3

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