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.
Get real-time rates for all USPS products and services.
Verify domestic, APO/FPO/DPO, PO Box addresses. Advanced features such as Residential Delivery Indicator. Address correction and suggestion functionality also available.
Full range of USPS PC Postage services, package types, and add-ons available.
Receive up to 40% off compared to USPS insurance rates. Plus get claims turned around in less than a week.
Request a USPS pickup for your packages.
Receive 360-degree tracking data for your shipments.
Seamlessly integrate a suite of account management tools built by Stamps.com.
Generate detailed activity reports through the Stamps.com software or API.
Industry standard web service technology similar to eBay, Amazon and most other API providers.
.Net, PHP, Perl and most other popular web platforms support SOAP.
Scaffold, develop and test in a separate environment that is nearly identical to production — for free.
Detailed technical documentation and guides walk you through how to build an application integrated with PC Postage.
Utilize industry standard web service technology similar to eBay, Amazon and most other API providers.
Contact a friendly, knowledgeable Stamps.com IT Specialist by email or phone for support.
Utilize a scalable platform that automatically updates with new USPS and Stamps.com products and services.