how to overnight a letter usps

how to overnight a letter usps involves using USPS Priority Mail Express, their fastest domestic service. To guarantee next-day delivery, visit a USPS location before the cutoff time, which varies by location, and choose the appropriate envelope. Include tracking and insurance if needed. This method ensures urgent documents, such as legal papers or time-sensitive notices, arrive securely and on time. Online label printing may offer discounts and scheduling convenience.