overnight ship usps

overnight ship usps USPS offers an overnight shipping service called Priority Mail Express. This is the fastest service available through USPS, guaranteeing next-day delivery for most locations within the U.S. Priority Mail Express provides tracking and includes insurance for up to $100. The cost for overnight shipping varies based on the package’s weight, size, and destination. This service is ideal for urgent shipments that must arrive the following business day. USPS also offers overnight shipping options for certain international destinations through Priority Mail Express International.