[GoblinSlayer]

I thought protonmail supports imap. Or was it discontinued?

[teekert]

There is a local bridge which transparently communicates between Proton’s encrypted servers and offers imap locally. Only on non-mobile OSs afaik. [0]

[0] https://proton.me/mail/bridge

[reddalo]

That's exactly what I wrote in my comment above. You need to install Proton Mail Bridge. But it only works if you're on a paid plan.