The Domestic Labels API supports creation of domestic shipping labels with Intelligent Mail Package Barcodes (IMpb). Along with label and barcode creation in PDF, TIFF, SVG, JPG, ZPL203DPI, or ZPL300DPI format, this API validates addresses, confirms product availability, calculates postage, and generates the required Shipping Services File in accordance with USPS Publication 199.

The Domestic Labels API allows you to integrate USPS shipping label creation and postage payment fully into your customer-facing or internal fulfillment systems and processes.

Creating a USPS shipping label and barcode – the domestic labels API provides a USPS certified label and barcode that will ensure packages reach their destination and are readable by USPS scanners and package processing machines.

Generating a USPS Shipping Services File – the Shipping Services File is an electronic pre-advice manifest that is required for shipping with the USPS – the labels API takes the package characteristics provided in your request and creates the Shipping Services File on your behalf, ensuring adherence to USPS and customs compliance standards and will avoid penalties and fees related to non-compliance.