Under the hood, we are using IETF Internet Messaging specifications commonly tagged as "email". Sounds old, right? Actually there is a lot of new stuff going on! For example, #chatmail apps now fully support:
- RFC9788 ("Header Protection") to achieve minimal metadata
- RFC9580 ("OpenPGP") to use modern cryptography
By comparison, "Messaging Layer Security (MLS)" has an older numbered RFC9420 (and doesn't have mass-usable app releases).
Maybe time to revisit old/new assumptions? :)