For some reason I have it in the back of my mind that they were at one point accused of being a honeypot for US intelligence because of their association with MIT. Probably complete BS, but maybe not. Are they as open source as they claim to be? Looks like they’re on github. F-Droid seems to think they have some Google libraries or whatever that they use.
ProtonMail users, how do you like/dislike it?
They are alright. They are no honeypot. You should bring proof if you spread such words.
They publish now and then the source code to their apps and services. They don’t develop publicly.
I don’t have any proof, just a dim almost certainly wrong recollection in my aging brain.