3D Mailbox is an email client that visualizes the emails you get as people in a 3D environment. It is very hard to describe, so you can either read this Download Squad review of 3D Mailbox or see the 1 minute trailer (I didn’t get it until I read the review, though).
Download Squad, in a nice attempt to be impartial, interviewed the creator of 3D Mailbox, Robert Savage. It’s obvious from the interview that Mr. Savage believes his product is innovative and that outside-the-box-thinkers (and gamers) will sure like it. I guess only time will tell.