Re: Thunderbird for the win
> But it's absolutely a terrible client.
I beg to differ.
It is not great. I had smaller, simpler clients that were better to use, 30+ years ago.
But email and messaging has changed. There are multiple protocols, multiple authentication systems, people sending formatted mail by default -- and you can tell the pros from the annoying noise just by if they insist they need formatting -- in various formats.
T'bird does its best to talk to all of them. That's a win. Others do that too. Many of the strong contenders are tied to one OS, though.
T'bird is multiplatform. That's a win. I run 3 OSes in common use and it works on all of them, no hitches, no problems. That's a double win.
I can't offhand think of any rival that can cover both of those.
But then, take them both, and add:
It's not merely freeware but FOSS. That's another win.
I can use it inside a company, on corporate kit (if I am allowed to install my own apps, obvs) and not violate any terms of use. No eval versions, no limited use clause. There are other email clients with free versions, but they are limited. Even Eudora was.
It doesn't need any particular server; it doesn't care. It doesn't need companion apps for contacts or scheduling; it does those too, well enough to be usable. It interoperates with the browser of your choice. It's not tied to Mozilla's browser.
It doesn't even _need_ you to have a chat app. It can do that, too. It natively talks to NNTP, XMPP, and Matrix, well enough to be my default client for all of them.
And with add-ons it can talk to Facebook, Slack, Discord, WhatsApp, Telegram, and everything I ever use except Signal.
Once those things are factored in, there is nothing else left that can compare, and in comparison, I don't care about minor UI issues. The raw functionality combined with the run-anywhere all-FOSS terms mean it's in a league of its own.
But you know what? Over the last decade+, I tried Evolution, Sylpheed, Claws, KMail, Apple Mail.app, Balsa, Geary, Mailspring, eM Client, GNUstep Mail, Deepin's email client, Elementary's email client, and some others. Not Alpine or Mutt because I want a GUI, viewing attachments etc., and I am not a heavy shell user.
For me, only Claws lasted weeks, and I went back to Thunderbird and stayed there.
Because I have config files dating back over a decade, most of the new UI stuff remains turned off as and when it appears, but I don't mind it. I use tweaks to `userchrome.css` to put the menu bar back at the top of the T'bird window on Linux.
So I reject your blaket assertion. You may not like it, but it is *not* a "terrible client." IMHO it's a bloody good one and I prefer it to every other major FOSS or freeware GUI email client on macOS _and_ Linux.
I rarely use Windows, so anything that only or mainly runs on Windows isn't in the running for me.