I am unable to delete mail from this website. I routinely check mail from the website when I am not logged into the game. When I am finished, I check mark the messages I want to deleted, and click "Delete Selected", they do not get deleted. In fact, they are still marked as unread. However, when go to read them, the contents are no longer there. It's like the content has been deleted, but the titles have not.
Now when I check, the messages have been deleted. But the number of "Unread Messages" is not updated to reflect that.
I've noticed that there can be a 'Sync' issue between the Forum Email listing, and the In-Game Email Listing... When deleting a Email 'In-Game', I've noticed that the Forum Email will still list it. (I've noticed the Sync Lag lasting at least 20 minutes...)