This is assuming it’s sealed and has a proper stamp. Post cards are more expensive than cheese. And who doesn’t like cheese right?
This is assuming it’s sealed and has a proper stamp. Post cards are more expensive than cheese. And who doesn’t like cheese right?
TL;DR: Probably not illegal, but I doubt the post office would accept it.
Answering this off-the-cuff with no research, but probably not illegal per se (more of a dick move).
A slice of cheese, wrapped or not, definitely would not make it through the sorting equipment intact, would likely melt in the trucks, and would absolutely stink up the place for the postal workers.
Edit: That said, there are classes of items that are prohibited in the mail, and this may fall under one of those. Like I said, I’m answering w/o any research whatsoever and focusing more on the logistics of it.