Delta chat is an encrypted messenger that uses email as the delivery. They have a group feature, which seems to work surprisingly well. But, we’ll see how well e2ee group chats can scale.

Either way, if you’d like to join and test it out you can use this invite link

If you’re unfamiliar with Delta Chat you can read more about it at https://delta.chat/

When signing up you can also “use other server” and switch to classic email where you can use your own mail provider as the account