A few things that would be nice additions to RoundCube:
A button to empty the trash (intead of having to select every mail in the box and then delete them)
A way to show all messages in a folder (kind of like how squirrelmail works - it shows you 30 or so by default, but you can click a link to show everything)
A way to import email address (I guess this is in the works?)
Also, there seems to be a minor issue parsing links (in 0.1 beta 1) - the registration confirmation email from this forum was not parsed properly - the link contained semicolons (
and RoundCube stopped parsing at this point, so I had to copy and paste the link to activate my forum account. Not a big deal, but it really should be able to identify the entire link.