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08/26/2025
08/26/2025
Domestic Merchant Returns API: User Guide
This user guide provides examples of XML transactions to the USPS Merchant Returns web service and guidance for installation.
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2026 First-Class Mail Advertising Promotion
The 2026 First-Class Mail Advertising Guidebook provides you with all the details you need to successfully participate in the promotion. In the Guidebook you will find information on the eligibility of mailpieces, information on the My Products Portal, and more. Navigate the document via the buttons on the side to quickly access the information most relevant to you.
2026 Tactile, Sensory & Interactive Promotion
The 2026 Tactile, Sensory & Interactive Guidebook provides you with all the details you need to successfully participate in this promotion. In the Guidebook you will find information on the eligibility of mailpieces, information on the My Products Portal, and more. Navigate the document via the buttons on the side to quickly access the information most relevant to you.
2026 Continuous Contact Promotion
The 2026 Continuous Contact Guidebook provides you with all the information you need to successfully participate in this promotion. In the Guidebook you will find information on the eligibility of mailpieces, information on the My Products Portal, and more. Navigate the document via the buttons on the side to quickly access the information most relevant to you.
08/25/2025
08/24/2025