Really? So it's legal for me to carry mail back with me from Japan on the airplane and walk through my neighborhood placing it in appropriate mailboxes?
Horsepuckey. I can't even legally put a neighborhood watch notice in my neighbor's mail box.
Maybe I don’t know what a monopoly is...I thought it was a situation in which there was only one entity able to provide the service. I’ll have to go back and check my vocabulary.
The mail boxes are part of the services provided by the post office, so you cannot put non-US mail in those boxes. But you could certainly walk up to the house with your Japanese mail and put it in an alternate box if you wished to do so. Newspapers around the country with rural routes do this all the time.
I have no idea what the neighborhood watch thingy has to do with monopolies...I’m stumped.