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The United States Postal Service (USPS) is excited to announce the upcoming release of our API Access Control initiative, set to launch in April 2026. This initiative is part of our ongoing commitment to enhance security, protect your shipments, and deliver a modern and reliable experience. For additional information on Access Control please see the Industry Alert.

Informed Delivery Mail Campaigns 3.0

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Ship Enrollment 3.0

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Appointments 3.0

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Disputes 3.0

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Adjustments 3.0

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Subscriptions - Disputes

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UserInfo 3.0

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Service Standards File Download

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Open and Distribute (PMOD) 3.0

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Subscriptions - Unpaid Packages

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