I have had other people's mail deposited in my mailbox many times, my PO number is one off of a dentists office address, so I get their mail all the time. I usually just put it back in the post box in the hopes they will deliver it as addressed, but they don't, it comes right back to me. So I finally took a short stack of these up to the clerk at the window and pointed them out, they are not my address etc. When the post office gets handwritten unbarcoded letters they go through a manual sort, they are then barcoded with whatever information the person entering it puts in. So if it is wrong, it gets the wrong delivery bar code and ends up in my post box. So now I have to block off the ridiculous bar code to insure it will not try to cozy up with my mail in my post box.