On Mon Feb 22, 2021 at 2:46 PM EET, Reto wrote:
> Better would be cert pinning which is
> https://todo.sr.ht/~sircmpwn/aerc2/329

I have a proof-of-concept implementation of cert pinning. I implemented
that specifically to be able to use aerc with ProtonMail Bridge.

I'm still learning how to use email lists for patches and in general and
therefore hadn't pushed my changes yet anywhere. But since someone else
showed interest in that, I'll push a patch to the list shortly.