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.
Is there a statute of limitations for a check if it has not been cashed after 6 years of the probate closure? Low Need What are the statute of limitations on a cashiers check not cashed by my my landlord 2 years ago in UT?