how much to overnight a letter with usps

how much to overnight a letter with usps depends on the size and weight of the letter. USPS offers Priority Mail Express for overnight delivery of letters and small packages. The cost starts around $26.35 for a standard flat-rate envelope, and it may increase based on weight, size, and additional services like insurance or delivery confirmation. USPS guarantees overnight delivery to most locations, with the added benefit of providing tracking and proof of delivery. Rates can vary by zone, so it’s important to check the USPS website for a more accurate quote.