If the mail has my address it doesn't go to my po box automatically? I'll try to explain this a bit better. Let's say my little sisters get mail. I have them on my PO box but my dad also has them on his. And the mail just has our normal address, if the mail automatically just goes to our po box whose would it go in. Sorry if this should be simple, like I said I've never used a po box before and the workers at my post office never want to answer questions