us post office overnight mail cost

us post office overnight mail cost The cost of USPS overnight mail through Priority Mail Express varies depending on the size, weight, and destination of the package. For example, the cost for a small flat-rate envelope starts at approximately $26.35, with additional fees for heavier or larger packages. USPS Priority Mail Express provides next-day delivery and includes tracking, insurance, and 24/7 customer support. The price can also increase for certain delivery areas, such as rural or remote locations.