Access the USPS API directly through Shippo’s connection.

Shippo is the easiest and most reliable way to access the USPS Web Tools


# Shipping API built for developers

Why use Shippo for USPS

As an official USPS ePostage partner, you can buy U.S. postage directly from Shippo. Our direct USPS connection is reliable, developer-friendly, and Shippo is proud to offer some of the best online postage rates in the industry. Shippo connects you directly to the USPS, no third-parties required!

USPS Supported Services

  • First Class Package Service
  • First Class Package International Service
  • Priority Mail
  • Priority Mail International
  • Priority Mail Express
  • Priority Mail Express International
  • Parcel Select
  • Address Validation

Countries served

  • United States outbound shipments to all domestic and international destinations

Intuitive UI and RESTful API

Anyone can create a shipping label and send a package within minutes. Tested by thousands of merchants, every interaction has been designed for ease-of-use.

Comprehensive, public documentation

Easy-to-follow documentation, tutorials, and API reference in our developer center.

Client Libraries

Shippo maintains packages for the most popular languages including Python, Ruby, Node, PHP and others. See our GitHub page.

Push-based webhooks

Get notified of any status changes as soon as they happen. Zero delays, so that you can get the most up-to-date information.

Discounted USPS postage rates

Access your own USPS account to use your negotiated rates, or get up to 60% off postal label rates through Shippo’s master account.

Want more?

Check out more features for developers or jump right into the docs.

Shippo API Features

Feature USPS via Shippo
Instant sign-up
Developer-friendly REST API
Multiple API client libraries
Public, comprehensive, intuitive docs
Built for scale, performance & reliability
Multi-carrier support
Tracking API with webhooks
Comprehensive, easy-to-use UI
CPP cubic shipping rates
Adult & Signature confirmation
Automated international commercial invoices
Bulk label-creation
Reference text on labels
Scan-based return labels
Manifest / SCAN Forms
Labels: PNG, ZPLII, 8.5x11 and 4x6 PDF
Fast, helpful technical support

Not a Developer?

Check out Shippo's features for merchants or view the apps, platforms & marketplaces built using Shippo.