united states post office overnight rates

united states post office overnight rates are the fees charged by USPS for overnight delivery services through their Priority Mail Express service. This service guarantees delivery by the next business day to most U.S. addresses, including P.O. Boxes. Rates for Priority Mail Express vary depending on the size and weight of the package as well as the delivery location. USPS also offers flat-rate envelopes and boxes for Priority Mail Express, which can help businesses save on shipping costs for heavier items.