I just can’t find a decent email client that looks like it’s from the last 20 years. Geary and Evolution both appear to be pretty modern but something about using Gmail with a Yubikey just doesn’t work and neither of them will connect to my account. Both on Fedora and OpenSUSE. Thunderbird works but it’s so old fashioned and Betterbird doesn’t look much better. What’s everyone else using?
I’ve been wanting something too! What I really want is something that interfaces natively with Exchange server as well as integrated inbox for multiple accounts.
The one product that exists is Blue Mail which is pretty nice except that half its functionality is broken. I’ve been in contact with their support multiple times over many months and eventually they just gave up. Its functionality is limited by arbitrary glitches and unknown limitations which they simply don’t want to bother fixing.