Web Tools Technical Guides  
Integrate USPS Web Tools on your Web site.
Get step-by-step information on how to integrate USPS Web Tools™ into your web site or shipping application by reviewing our user's guides.

Development Guide (Read First)
Step-by-step instructions for all Web Tools

Development Guide (HTML)

Distributors Guide
Policies and Procedures for Software Distributors who Distribute Web Tools.

Distributor Guide (PDF)
Distributor Guide (HTML)

Web Tools
The following Web Tools are available for use.

Address Information

Zip Code Lookup (HTML)

Address Verification (HTML)

City/State Lookup (HTML)

Note: Additional permission is required to use Address Information Web Tools.

Delivery Information

Track & Confirm (HTML)

Domestic Mail Service Standards (HTML)

Shipping Labels

Delivery Confirmation (HTML)

Signature Confirmation (HTML)

Priority MailĀ® Open and Distribute (PDF)
Priority MailĀ® Open and Distribute (HTML)

Electronic Merchandise Return (PDF)
Electronic Merchandise Return (HTML)

International (PDF)
International (HTML)

Express Mail (HTML)

Express Mail Hold For Pickup (PDF)
Express Mail Hold For Pickup (HTML)

Online Customs Forms

Customs Forms (HTML)

Rate Calculators

Domestic & International Rates (PDF)
Domestic & International Rates (HTML)

Carrier Pickup™

Carrier Pickup (PDF)
Carrier Pickup (HTML)

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  Service Providers
Need assistance with integrating? Use a service provider.
Go To Service Providers

Technical Support

For technical questions, contact the Internet Customer Care Center at icustomercare@usps.com