Features and Benefits

Integrate with Stamps.com Mailing and Shipping Solutions

The Stamps.com Developer Program provides the technical resources and support you need to add USPS mailing and shipping capabilities to your software in any platform or environment.

Calculate USPS Rates

Get real-time rates for all USPS products and services.

Verify U.S. Addresses

Verify domestic, APO/FPO/DPO, PO Box addresses. Advanced features such as Residential Delivery Indicator. Address correction and suggestion functionality also available.

Generate Shipping Labels via Live Postage

Full range of USPS PC Postage services, package types, and add-ons available.

Discounted Package Insurance and Faster Claims

Receive up to 40% off compared to USPS insurance rates. Plus get claims turned around in less than a week.

Request Pickups

Request a USPS pickup for your packages.

Track Shipments

Receive 360-degree tracking data for your shipments.

Manage Accounts

Seamlessly integrate a suite of account management tools built by Stamps.com.

Access Real-Time Reporting

Generate detailed activity reports through the Stamps.com software or API.

SOAP Based Web Services

Industry standard web service technology similar to eBay, Amazon and most other API providers.

Develop using most Development Platforms

.Net, PHP, Perl and most other popular web platforms support SOAP.

Sandbox Environment Available

Scaffold, develop and test in a separate environment that is nearly identical to production — for free.

Reference Documentation and Guides Provided

Detailed technical documentation and guides walk you through how to build an application integrated with PC Postage.

WSDL (Web Service Development Language File) Provided

Utilize industry standard web service technology similar to eBay, Amazon and most other API providers.

Trained Customer Support Team

Contact a friendly, knowledgeable Stamps.com IT Specialist by email or phone for support.

Regular Releases and Updates

Utilize a scalable platform that automatically updates with new USPS and Stamps.com products and services.