Over the last few years I have become a big fan of Gmail, particularly the ability to archive messages. I have heard it repeatedly mentioned that the iPhone will work with Gmail, but I am really interested in how exactly it will be implemented. Is it just going to be a POP account, or are they going to allow for full Gmail functionality including archiving? In theory you could just use Gmail through Safari, but it would be really slick if they integrated it in the mail client.