us mail track and trace refers to the system that allows customers to track the status of their mail and packages sent through the United States Postal Service (USPS). By entering a tracking number into the USPS website or a third-party tracking tool, customers can see where their shipment is in the delivery process and when it is expected to arrive. The USPS Track and Trace system provides updates on the location, status, and estimated delivery time of items, helping customers stay informed about their shipments.