Create amazing customer delivery experiences with the

Best USPS Shipping API.

Easily add USPS services to any platform allows you to seamlessly integrate USPS services in a robust, yet simple REST API.

Access Rates

Access all USPS rates and easily compare across all mail classes and services.

Print Shipping Labels

Buy and print USPS postage for any mail class, domestic or international.

Real-Time Tracking

Delight your customers with package status events updated along every step of the journey.

Why API?

With API you have unlimited access to all USPS services and deeply discounted USPS rates. Plus, we give you a powerful set of features that offer end users more options for easier, more powerful USPS shipping.

Access Multiple Carriers

Enjoy choice, delivery speed and competitive rates with the flexibility of your favorite carrier

Global Shipping Made Easy

Our Global Advantage Program simplifies international shipping. Access electronic customs forms, instant refunds, and more

Fully Branded Labels

Promote your business with custom labels featuring your logo and marketing message

Hidden Postage

Hide actual postage costs on your shipping labels to allow for markups on shipping costs

Schedule Pickup

Skip trips to the Post Office by scheduling USPS pick-ups right from the software

Create SCAN Forms

Combine all your packages into one barcode with our convenient SCAN form options

Address Validation

Avoid returns by validating domestic and international addresses for every label Insurance

Deliver peace of mind and 40% savings over retail USPS rates with our package insurance

The technology provider of choice for the world’s best companies

Looking for the Web Services API?

Existing Integrators, or customers who prefer an industry-leading SOAP API, can use SWS/IM API documentation to:

  • Easily print labels.
  • Instantly compare rates.
  • Automatically validate all domestic and international addresses.
  • Batch print all your labels at once.