post office overnight mail cost

post office overnight mail cost refers to the fee for sending mail via USPS Priority Mail Express. Rates start at approximately $28 for a flat-rate envelope and increase for larger or heavier items. Overnight service guarantees delivery within one to two days depending on location. This premium service includes tracking, insurance, and delivery confirmation. Businesses and individuals use it for urgent communications, contracts, and important parcels. Scheduling pickups, printing labels online, and using USPS tools can streamline the process. Discounts are available through commercial pricing or when using approved online postage platforms.