WooCommerce Stamps.com API 2.3.1

Version
2.3.1
Updated
May 21, 2026
Developer
Woocommerce
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WooCommerce Stamps.com API 2.3.1
WooCommerce Stamps.com API enables you to generate USPS shipping labels directly in your store via the Stamps.com API, streamlining fulfillment and reducing manual steps. Benefit: fast, reliable label creation with USPS rates access. Type: WooCommerce extension.
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Description

WooCommerce Stamps.com API is a WooCommerce extension that helps you create USPS shipping labels directly inside your store. Instead of manually generating labels, the plugin connects to the Stamps.com API to generate USPS labels as part of your fulfillment workflow.

It also uses Stamps.com API access to obtain USPS shipping rates for label creation, streamlining processing time and reducing repetitive steps. If you want USPS rates to appear to shoppers at checkout, you’ll need the separate USPS Shipping Methods extension.

Main Features

  • USPS label generation in WooCommerce — Creates USPS shipping labels from within your store workflow.
  • Stamps.com API integration — Uses Stamps.com API access to request label data for USPS shipments.
  • USPS shipping rates access — Retrieves USPS shipping rates through the API for label creation.
  • Fewer manual fulfillment steps — Reduces time spent generating labels outside your WordPress admin.
  • Works with existing WooCommerce orders — Produces labels tied to customer order shipment details.
  • Checkout rates handled separately — API label rates are not automatically shown to customers at checkout.
  • Compatible with USPS Shipping Methods — Pair with the USPS Shipping Methods extension when you need rates displayed at checkout.

Benefits

  • Faster label creation — Speeds up fulfillment by automating USPS label generation inside WooCommerce.
  • Reduced errors — Lowers mistakes that can happen when recreating shipment details manually.
  • Smoother order processing — Keeps shipping tasks concentrated within the same store environment.
  • Better operational consistency — Uses API-driven USPS rates for consistent label creation.
  • More control over checkout UX — Lets you decide whether to show rates via the USPS Shipping Methods extension.

Who is it suitable for?

  • WooCommerce stores that ship via USPS
  • Shops using Stamps.com for shipping label workflows
  • Ecommerce brands managing moderate to high order volumes
  • Agencies integrating shipping automation for clients
  • Fulfillment-focused businesses streamlining warehouse and shipping operations
  • Merchants who want label creation in WordPress/WooCommerce admin