Once you reserve a PO Box at the Post Office location, link it to your USPS.com account. You can manage it online instead of the Post Office location. Link a PO Box to an USPS.com Account
Quick Answer. Cashier's checks themselves do not expire as personal checks do. However, the funds behind the check are subject to state escheat laws.
Quick Answer. Checks generally do not have expiration dates, and banks may cash checks even if they were written more than six months in the past. However, banks have the option to honor or dishonor a check more than six months old. Continue Reading.