
Below is the list of mail currently in my inbox. This was set up for me by a friend (thanks Karl!) so I have no idea how it works. I do know that it was originally done by Brad Fitzpatrick and that somewhere on his site he has how he did it. So if you're interested in doing something similar you'll have to poke around over there.
That said I should note I clear this periodically because I don't delete certain things, ever. Well barring complete and total computer melt down, which has happened to me.