To set up your travel mailbox as your new address, you will first need to get a notarized USPS Form 1583 authorizing your provider to receive, open, process, and scan your physical mail.  Reroute current mail by submitting a temporary (from 15 days to 18 months) or permanent change of address with USPS. You can submit an address change with USPS online or at your local post office using P.S. Form 3575.