DeltaChat uses AutoCrypt which needs no user interaction to immediately go for encryption. With traditional emailing with GnuPG and email one would first manually exchange GnuPG keys (or download them from a key server). With DeltaChat this is automated when both users use DeltaChat. With DeltaChat there is no real difference between emailing encrypted with another DeltaChat user, and emailing without encryption with another user which does not use DeltaChat.
Does your XMPP provider have a message retention policy ? It would pile up there I guess. With DeltaChat you can, like in Signal messenger, configure disappearing messages to automatically clean up old messages.
In DeltaChat regular emails look the same as the encrypted DeltaChat emails except for the tiny green lock icons. Emails from DeltaChat to DeltaChat end up in a separate DeltaChat mail folder so there is no unreadable clutter in the email inbox when using a regular email client. I think DeltaChat could be great for normies because it is not super difficult to install and configure and use, and the messages part looks like the popular chat client WhatsApp.
We don’t *need* more cars, more traffic, more congestion, more pollution, more road damage, and more CO2 emissions. (climatejustice.social)
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Unattended updates for everyone, 1.19 is here | F-Droid - Free and Open Source Android App Repository (f-droid.org)
What do you think about DeltaChat ? (delta.chat)
Open source, and nice for normies.