Our service works like an extremely advanced P.O. box. You can avoid the hassle of going to pick up mail in person, as your mail is always immediately accessible online. Our service works like an extremely advanced P.O. box. You can avoid the hassle of going to pick up mail in person, as your mail is always immediately accessible online. After reading your mail digitally, you can give us further instruction regarding any mail piece (e.g. shred it or forward it). PO Box Zone is Located at a physical street address. Our employees can accept any letter on your behalf, even FedEx, UPS, DHL, and other courier packages that normal P.O. boxes cannot.