I've been evaluating roundcube for a while now, and just this morning installed the latest CVS version for testing. I much prefer the look to squirrelmail, my current deployed webmail system.
Anyways I quite a fan of format=flowed in outbound email, as it makes it easier for everyone to read mail. For those who use an 80 character console (like me) the mail shows up correctly, and for those who use graphical mailers like Thunderbird or Mail.app get the benefit of automatic line wrapping rather than having fixed length fields in a large application window.
I was wondering if there was any plan to send mail using flowed formatting. If not, I would like to request that it be considered. If so, that's great news.
I plan to look at some of the code later, maybe I can make some changes myself, but I'm not always that good with coding.