I rented a post office box, then a former coworker would periodically collect my mail and send it all at once in a small parcel. She was sending physical mail,

I rented a post office box, then a former coworker would periodically collect my mail and send it all at once in a small parcel. She was sending physical mail, and so taking some modest risk were someone to mail me contraband. Canada will forward mail internationally. When I asked a USPS clerk if they did so, she was shocked, as if I planned some great crime.