I would love to see a sound implementation of secure e-mail, but I also believe that such a system should not be built on top of SMTP.
Signal’s cryptography seems stellar, but to me it feels a bit weird to use instant messaging as a full replacement for electronic letters. I’m guessing here, but it would probably not be impossible to build a more traditional e-mail client on top of the Signal Protocol.
Isn't this mainly about adding a a subject metadata field an a client that just displays messages differently, enables sorting into directories and so on?
Is there a real technical difference between messaging and long form emails that I don't see?
Signal’s cryptography seems stellar, but to me it feels a bit weird to use instant messaging as a full replacement for electronic letters. I’m guessing here, but it would probably not be impossible to build a more traditional e-mail client on top of the Signal Protocol.