united states postal service overnight delivery

united states postal service overnight delivery refers to USPS Priority Mail Express, the fastest domestic shipping option. It guarantees overnight delivery to most U.S. ZIP codes and includes tracking, $100 insurance, and Sunday/holiday delivery in some areas. Rates depend on weight and distance. It’s ideal for urgent documents, perishable items, or last-minute gifts. Label purchases can be made online or at the post office, with drop-offs and pickups available.