Originally Posted by JLuke
Probably would be best to ask your post office that question.
"technically" they shouldn't care since the box is paid for once it's shipped once, though It may be hard to prove the box is already used if you put a new label over the old one.
The boxes though are atleast "free" I normally go to my post office and grab a dozen or two at a time and use them over a few months (I atleast hope they're free, if not then I've been stealing from the government for years)
They are free. Don't think they want people going in, grabbing them and using them as moving boxes or anything, but guess that was my point that they were already used. I'm not trying to reuse the postage or anything, just seems like a waste when I could reuse them. Which I often do when I am able to afford the higher Flat Rate fee.