postal service usps tracking allows customers to track their packages in real-time using the tracking number provided when the item is shipped. USPS offers several tracking options, including standard tracking for First-Class Mail and Priority Mail, as well as more detailed tracking for services like Priority Mail Express and Registered Mail. With USPS tracking, customers can monitor the progress of their shipments, from acceptance at the post office to final delivery. In addition, USPS provides email and SMS notifications to keep customers informed of their package’s status.