The part about ProtonMail and Tutanota seems pretty biased. I would like to hear how the author suggests that they should implement IMAP and SMTP without compromising the encryption.

It sounds like the author prefers dubious advantages to real improved security.

That's quite ridiculous considering that according to him HTML emails are:

>"... a security nightmare, are mostly used for advertising to you and tracking you, are less accessible for many users, and don't offer anything especially great for it."