Exploring CPUs, motherboards, overclocking, building your own PC, case mods, PC brands, handhelds, peripherals of all types, DVDs, CD burners, hardware-specific software, device drivers, and anything else related to hardware.
The The Restaurant at the Edge of the Universe, previously known as The Water Cooler, is a place to post stuff that has absolutely nothing at all to do with computers, broadband, Scot's Newsletter, or anything that's "supposed" to be here.
Yes, sadly... the ProtonMail's "POP/IMAP" bridge app is only available to paying customers, so if I want to use ProtonMail, I have to go their webpage to do it. I hate that.
What accounts (not your email addresses, just the provider's name) are giving you troubles on T-bird? Some email providers now require that you register T-bird as your mail application and utilize a generated security password (one time only) to fully access their servers. I had to do this with Gmail and Yahoo, I think, a year or so back.
Edited for spelling error. ~E.
Unfortunately, I'm having on-going issues with Thunderbird, which is a topic for another thread. It's refusing to send or receive email from one account and refusing to send, only receive, from another account. I've had some distractions that have kept me from doing more than cursory investigation of this behavior, but it does leave me using a web interfaces for two accounts, and I hate it. I've always used Protonmail's web interface and don't have problems with it.