I’ve wanted so hard to switch to thunderbird completely. My email is outlook and has the Authenticator set up for login, which has caused me issues adding my inbox. I found an add on but it had a few that I think was monthly.
https://kb.uwm.edu/uwmhd/page.php?id=109671
I am not familiar with outlook but this might be help
Thanks for replying, I ended up figuring this out like two days ago. Turns out you have to generate an app password from the security options on Microsoft’s website.
The layout change is awesome! The old öayout was really meant for 4:3 screens with lots of vertical height. It was uncomfortable to use on 16:9 screens in my opinion.