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?
Using Evolution for nearly a decade now.
Cannot say anything about using it with a Yubikey.
Concerning Evolution: It never let me down, always worked and is comparatively lightweight.
Thunderbird was quite slow/heavy/memory hungry many years back. KMail ate my emails, failed at integration of GMail accounts etc etc etc. In the past I also liked Sylpheed, but AFAIK it doesn’t have any OAUTH support etc. by now.
When nothing big changes, I guess only Thunderbird and Evolution are good investments, because they seem to be the only clients which are stable now and have enough users/active developers to not disappear randomly.