Some things I don’t like about this… more to do with the way Mail is set up perhaps.

1. Moving important mails to a Mac-folder actually moves to to a lower spot on the screen, the highest is just under the Junk-folder.
2. There is no option to mark messages as unread, making a nice bold number of unanswered mail appear next to the folder
3. The folder looks just like any other folder

A thought. Wouldn’t it be better to not move ‘to respond’ messages, and instead just create a short-cut to mark it red or something? I realise that this goes against the whole ‘empty mailbox’ thing, but I’m curious how other people have dealt with these issues.