Delta ChatFollowing popular request, here is a proper announcement about editing and deletion of messages available in app stores now. It briefly highlights how Delta Chat actually works contrary to how even some experts thinks it works :)
TL;DR Delta Chat is not a classic e-mail client. It uses special messages to co-ordinate encryption, metadata and group interactions and now edit/delete. Delta Chat implements a Peer-to-Peer messaging paradigm without any server state.
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