[labpdx]

Would you read / inspect each letter going out? What would stop a bad guy from sending a threatening letter to the President using a fake name and return address? It'd be postmarked outside of their actual city, with no link back to them unless you're logging IPs.

[bavidar]

We value security and privacy and no letter is read. We can track payments through credit cards so the sender is not anonymous.

[rrouse]

Prepaid cards are rejected?

[tbrownaw]

Aren't there already remailing services at cities with interesting names? I wouldn't think this could be worse.

I also wouldn't think it would be worse than the drop-off boxes at post offices. Sure those have a known physical location, but that just means you go slightly out of your way next time you leave town for a big football game or whatever.