Version:            (using Devel)
OS:                Linux
Installed from:    Compiled sources

I've been a long-time Thunderbird user, but after yet another hideous icon change from Mozilla, decided to have another look at KMail. As I was poking around the configuration, I realized there was a feature missing that is going to be a non-starter for me. Specifically, the ability to change reply options per identity.

<story>
I use TB right now for $DAYJOB IMAP, that also receives mail forwarded through my sourceforge account. Since $DAYJOB is Outlook-based, naturally people expect the abominable quoting style and TOFU[1], whereas I obviously prefer to use proper quoting and trimmed-inline-reply for sensible people. Now, for the longest time I simply used Outlook and put up with it (and Windoze in general ;-( ), and then moved to Evolution for a while (awful program, that; for some reason I didn't realize that, yes, $DAYJOB's e-mail server *does* have IMAP enabled). I'd been dealing with, and apologizing for Outlook's awful quoting the whole time.

When I finally switched to my beloved Thunderbird and set up my identities properly, I was delightfully surprised the first time I replied to something that had been sent to sf.net that Thunderbird not only picked that identity as the outgoing address, but *put my signature /and the caret/ in the right spot (at the bottom) and with the proper ("-- ") header*.
</story>

TB's automagical quoting, and signature and caret placement, based on the named recipient of a message (and thus the associated identity) is not something I am ready to give up. Please add this to KMail! Bonus points for offering Outlook-style (gratuitous header, no quote character) reply quoting as an option, which Thunderbird seems to lack currently.

1: http://cygwin.com/acronyms/#TOFU