The United State Postal Service (USPS) forwardable mail types are First Class Mail, Priority Mail Express, First Class Package, Media Mail, and Parcel Select. (Media Mail and Parcel Select require additional postage fees to forward packages.) The USPS forwarding process can take up to 7 to 10 days before delivery. It is important to provide your most current address to anyone who is sending you mail. A change of address is good for 12 months. When it expires, mail sent to a previous address will return to the sender.