[SyneRyder]

> I'm willing to pay, someone please give me a decent cross platform alternative with a GUI, ideally a proper, non-electron one.

Have you tried Postbox? It's cross-platform Mac/Windows, native non-Electron (actually forked from Thunderbird long ago), supports multiple accounts, lots of keyboard shortcuts & paid non-subscription product developed by a company. I've been using it ever since Eudora died, it's the closest I've found to that Eudora power user workflow. It's a GUI app though, not a terminal app.

https://postbox-inc.com/

[krageon]

I appreciate that a lot of people use Mac and/or Windows, but calling it cross-platform and then excluding the third big platform option is I think missing the point.

[xenator]

Technically if it supports more than one platform it is already "cross-platform". It is not "every-" or "all-platform".

[krageon]

Technically true! What I said was that it was missing the point, not that it wasn't literally true :)