"has come to the conclusion that on-going stability is the most important thing, and that continued innovation in Thunderbird is not a priority for Mozilla’s product efforts. "

I absolutely agree with this. I really don't want my e-mail client to be innovative. I just want it to work, connect to as many of my accounts as possible and keep everything separate (I hate unified inboxes with a passion that could melt the heart of stars).

I do wish it got a visual update every once in a while, and they fixed search. But other than that it does what I need it to do and it gets out of the way the rest of the time.