The #37c3 delta chat group has now 48 members, all using guaranteed end to end encryption and several games and apps .... So far without a glitch, no "couldn't decrypt" errors, everything lightning fast, some people using multiple devices with their account, 30 people joining during live onboarding on day1 and using a editor together in the chat (like cryptpad without a server basically). Seems like all the milestones of 2023 (guaranteed e2ee, web apps, chatmail) are ... Actually playing out ;)
@delta wait you're doing cryptpad and games over *email*?! Is this like a closed-off "email"-like network that uses email protocols but over a different channel somehow? Or if it is over regular email, how do you handle soft-bounces?
@scott it's regular email :) in case of soft-bounces, e.g. greylisting or rate limiting, the email is retried after some time. For hard bounces like "recipient's mailbox doesn't exist" the error message is shown in the UI.
@delta that's amazing, do you publish any technical details on how it all works?
@scott I think the best resource is https://delta.chat/help, it explains a lot about the internal workings.
Delta Chat: FAQ

What is Delta Chat? Delta Chat is a reliable, decentralized and secure instant messaging app, available for mobile and desktop platforms. Instant creation of private chat profiles with secure and i...