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Your mobile email interface does not have an refresh like the desktop version. When you are using mail on you phone it wold be nice to have similar features to be able to have the interface refresh so that you do not have to manually refresh. Sometimes the mobile interface will throw an exception during refresh if you refresh after a period of time that pasts some time limit you have in the app. Also will throw exceptions if you leave the in box (such as going to a new page then useing the back button) temporarily. The session state should hold that information so that you can return to the inbox without having to go back to login screen. I think this is an important feature.