since ProtonMail is basically wrapping on OpenPGP, why don't they just allow IMAP login for MUA with native OpenPGP support?
@ghost I always thought there's another layer of encryption applied to the entire inbox, But no?
@niconiconi no, metadata aren't covered by their e2ee. I understand the usability issue though, webclient doesn't download the entire inbox to search something
@ghost @niconiconi it allows search?
@leo_song @ghost I meant, I thought the individual mails are public key E2EEed, but the mailbox itself is symmetrically encrypted as a whole, and this was what made it incompatible with IMAP. But apparently I was mistaken... Yeah, my mistake was obvious in hindsight. If it was the case, even dynamically appending data is a problem.
@niconiconi @leo_song it's already wildly nested, you enter a symmetric password to retrieve an asymmetric secret key to retrieve a symmetric session key to retrieve the content
@leo_song @niconiconi metadata fields only. client-side content search was added just last year.
@ghost 增加用户黏度,击穿用户心智(