Wow, I'm amazed by the outcome of this poll (up till now). I figured the MS Outlook-family apps wouldn't be top listed (after all, we have a lot of *NIX freaks around here), but because of that, I'd say pine/elm/mutt would be on the top. But no, currently Thunderbird is ranked highest. I thought most of the monks over here would at least love an app that would allow them to use $EDITOR¹ for composing mails...

I recently switched from PINE (still love it) to mutt (getting to love it more and more) ... for what it's worth ...