It is not uncommon to find other peoples mail in our mailbox, or to never get mail that was supposed to arrive. I have even complained to the regional head of USPS for our area, but nothing improved. Last month an obvious check meant for an elderly couple down the road showed up in our mailbox. I took it to them and reported that to our local postmaster. He did not seem to care and seemed to imply that I was making trouble for the mail carrier lady.