Service Standards 3.0 This API supports the service standards for the number of days between the acceptance and delivery of a piece of mail that the Postal Service™ considers to be timely delivery. Service standards are delivery benchmarks for how long customers can expect for the Postal Service to deliver different types of mail from origin to destination — Point A to Point B. Service standards are not necessarily the same as the actual service performance.
Tracking This API returns tracking status and related details for a given USPS package, including scan events and their date, time, and location. The Tracking APIs allow you to integrate the status of your shipment into your customer-facing experience and internal fulfillment processes that will benefit your company by: Providing your customers with the latest status and delivery expectations while keeping them within your company’s or organization’s website; and, Integrating status and delivery information for incoming packages or customer returns directly into your systems and processes so that you know when a package will arrive at your facilities.
Tracking 3.0 This API returns tracking status and related details for a given USPS package, including scan events and their date, time, and location. The Tracking APIs allow you to integrate the status of your shipment into your customer-facing experience and internal fulfillment processes that will benefit your company by: Providing your customers with the latest status and delivery expectations while keeping them within your company’s or organization’s website. Integrating status and delivery information for incoming packages or customer returns directly into your systems and processes so that you know when a package will arrive at your facilities.