I've been using Betterbird for a while and I like it. It's based on Thunderbird.
I just switched over to Linux Mint and, while it's not perfect, it's so much better than windows.
That link is down for me.
Here's an archive link:
https://archive.org/details/DontBeaS1947
I've been using Betterbird for a while and I like it. It's based on Thunderbird.