usps tracking usa number

usps tracking usa number is a unique identifier provided by USPS for tracking packages within the United States. This number allows customers to monitor the progress of their shipments, receive updates on delivery status, and estimate the delivery date. The USPS tracking number can be found on the shipping receipt or in the confirmation email for an order. USPS tracking is available for most mail classes, including Priority Mail, First-Class Mail, and Express Mail, providing real-time updates on package location and delivery.