Speaking as someone who knows their way around cryptography and protocols, and has happily hacked on SMTP/POP3/IMAP clients & servers, what *exactly* is the reason why @Tutanota and @protonmail don't support these protocols and/or external clients?

Because all I can see are downsides of this.

Fuck, we shouldn't have to ask for interoperability in 2022.

@jens probably because they’d have to expose their cryptography algo? I haven’t used tutanota, and only used proton for a few days (for testing) so i have no real idea, so take this with a grain of salt, obvs.


@gergely in order to send email outside, they have to use understandable aka standards based algorithms.

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