Alright. Here's my idea. You go onto a server with a well known AH manipulator. Just do some research to find one, try realm forums. Find out the name of the AH alt, which is usually infamous. Create a character with the exact same name, except for "r" or "b" at the end, or any other hotkey that one would use often. What will happen is by accident, the sender would while forwarding an item (not sure if that's my CT_Mailmod, or if it's built it), or just sending it to their AH alt, they might open their bags, drag it out, put it in, after they've typed in the name then press b to close their bags, r to respond to a tell, et cetera. There is a chance if this happens, then you could intercept the item, although, it may be unlikely and not worth much, but it's worth a try.