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Ultimate Guide to USPS API Integration
"Integrating the USPS API into your e-commerce platform or enterprise resource planning (ERP) system allows you to automate shipping rates, validate addresses, track packages, and generate labels in real-time. To succeed, you must register for a USPS Developer Portal account, obtain OAuth2 credentials, and connect your application to the RESTful USPS APIs to streamline your logistics workflow. The Evolution of USPS API Services As of 2026, the United States Postal Service (USPS) has completed its significant transition from the legacy "Web Tools" XML-based system to a modernized, RESTful API architecture. This shift was designed to provide dev..."
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