Just a thought. It's not a priority but I had occasion to want to back up my Protonmail emails yesterday, and I don't know whether you've tried it, but it's an unnecessarily convoluted process involving downloading an EXE, then typing a bunch of stuff into the terminal. Due to there being no cursor, I had to go back in and turn off 2FA and change my password to something siimple so I could get it to work. After which, it crashed twice and I eventually gave up. I'd like to think it should be easier just to download a load of JSONs.