Internet mail still moves as MIME over IMAP and SMTP. That’s fine for delivery — bad if you want smaller messages or real end-to-end… Internet mail still moves as MIME over IMAP and SMTP. That’s fine for delivery — bad if you want smaller messages or real end-to-end privacy of the body, without locking the format inside one app. https://medium.com/@chris.ahrweiler/foxy-mail-wire-an-open-format-for-compressed-encrypted-email-f84ef6232079