They will even deliver boxes to your front door, for free, by simply submitting a form online.

It's so easy, I'm not at all surprised that it's occasionally abused.

They wrap up the free priority mail flat rate boxes to obscure markings to send them with a cheaper service. So they know should they’re naughty but might not realize it’s reached the level of a crime, perhaps. Definitely didn’t realize they’d have customers who don’t like stealing from themselves (taxpayers)