I respect all the people who give an incredible amount of time to these projects. I help when I can, and give money to the ones I rely on when I can't contribut

I respect all the people who give an incredible amount of time to these projects. I help when I can, and give money to the ones I rely on when I can't contribute any other way. But I heartily disagree that criticizing the product or the development priorities is "denigrating" their efforts. It is simply criticism, hopefully constructive. People were asking to copy filters between machines 20+ years ago. Filters are essential for any E-mail client; I can't imagine what the intended M.O. is for them in Thunderbird at this point. If I weren't exclusively on Macs every day I would absolutely implement this myself; as it stands, I can't justify the time. But I can armchair-quarterback the shit out of it!