After not trying Thunderbird since the '90s (when I dismissed it with prejudice for having no way to export, and thus copy between computers, all the filters you'd set up), I was forced to after discovering the unusably defective shitshow that is Outlook today.

I was pleasantly surprised by the experience of installing and configuring Thunderbird on two new computers I bought for my parents. Pretty much seamless, and I kept waiting for it to fail it furiously downloaded all 15,000+ messages in each of their AOL In-boxes. Nope. It worked fine, unlike Outlook and whatever the atrocious POS client Microsoft is including with Windows these days.