Back when I used Outlook, way before I discovered the beauty of a Mac, on a folder (Reference, @Waiting For etc) it would let you display a number next to the folder showing you the amount of total contents.
So for example, if three emails were in your @Action folder you would see @Action (3).
I'm trying to implement this with the Mail.app on the Mac. Apart from marking the messages as unread I can't see how to do this.
I'm running the Mail Act-on plugin and I can hit a key sequence and the email is automatically sent to a folder. Unfortunately the plug-in marks it as read and wont let you mark it as unread after its been moved. They are working on it but I don't know how far away that is.
Has anyone managed to get this working with or without a plug-in?