overnight mail usps cost

overnight mail usps cost varies depending on the size, weight, and destination of the package. USPS offers a service called Priority Mail Express, which guarantees overnight delivery to most U.S. locations. The cost of overnight mail through USPS depends on these factors, with flat-rate pricing available for certain package sizes. Priority Mail Express also includes insurance for up to $100 and comes with tracking services. While it’s a more expensive shipping option, it’s a reliable way to send urgent mail or packages.