WooCommerce Stamps.com API

WooCommerce Stamps.com API is an official WooCommerce extension that connects your online store with Stamps.com, the leading USPS postage provider in the United States. It is designed for businesses that manage physical orders from WordPress and need to automate shipping label generation without leaving the WooCommerce admin panel.

This integration allows you to create print-ready shipping labels directly from your WooCommerce orders screen. The plugin connects to your Stamps.com account and automatically accesses the most up-to-date USPS rates when generating each label, offering you reliability, speed, and accuracy in every shipment. You no longer need to manually copy order data into an external shipping tool: the entire workflow is centralized in your WordPress dashboard.

Key features include USPS address verification before generating the label, real-time rate requests based on package type, weight, and dimensions, and label generation for both domestic and international shipments, including customs forms for international packages. It also allows you to manage your Stamps.com account balance directly from WooCommerce, with the option to auto-reload postage when the balance reaches a certain threshold, as well as process refunds and void labels when necessary.

The extension is especially useful for businesses whose order volume is growing and where manual shipping handling becomes unsustainable. With batch label printing and shipping process automation, you reduce errors, save hours of work, and improve your customers' experience by dispatching their orders faster. Additionally, you can combine this extension with the WooCommerce USPS Shipping Methods extension so your customers see real-time USPS rates during checkout, and you can take advantage of those same rates when generating labels from the orders panel.

With nearly 500,000 customers, Stamps.com has established itself as the country's most important USPS postage provider, simplifying access to the lowest rates and the most popular USPS services. Whether you ship one package a day or a thousand, from your garage or a large warehouse, this integration provides you with the tools needed to make your shipping process faster, more economical, and more efficient.