Some of Outlook.com I really love, the interface is great.
I can find a way to easily sort unread messages. I hate everything being mixed up in my inbox so I have folders for everything which is great but sometimes I want to review my unread mail from all the folders so I know I haven't missed anything.
In Gmail you just type 'unread' in the search bar at the top, in Outlook.com you ... ?
Please don't tell me MS left out included this functionality.