How to sort by unread email

[tazmanian]

I have been waiting forever for a way t sort by unread mail.  I have about 500 messages in my inbox and still don't see a way to sort by unread email with the current version 0.1.1.  Can someone please tell me if this is possible and how to do it.  I would like to always see my unread email first (not by date, etc).  This is because some spammers like to change the dates on email and thus you don't always see them.  thanks!