next day mail usps

next day mail usps is offered through USPS Priority Mail Express, which guarantees overnight delivery for shipments within the U.S. This service provides fast delivery, tracking, and includes up to $100 in insurance. USPS offers other expedited services, but Priority Mail Express is the only one with a guaranteed next-day delivery timeframe. The price for this service varies based on the weight, size, and destination of the package, with additional fees for certain features like signature confirmation.