I use the uBO ad blocker as well as ABL.
For a while after I stopped using Mozilla products, I probably tried several different email client programs. In fact, I know I did, I don't remember exactly how many or which ones though. The Bat! comes to mind if I try to focus on that very gray cloud list.. I just used my browser and the mail services webmail. Some smallish number of years ago I started using
interlink/ for an email client.