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      • USPS Mailing Services team provides strategic incentives, offering various benefits and advantages to businesses and individuals.

        All Mail Incentives

        Mail Growth Incentive

         

        USPS Mailing Promotions seek to increase engagement and response rates for Mailers by leveraging high value mailpieces.

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  2. Tech Guides
  • 11/26/2025

    PostalOne! Release 63.0.0.0 Mail.XML TEM WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ TEM Release 63.0.0.0

  • 11/26/2025

    PostalOne! Release 63.0.0.0 Mail.XML PrePROD WSDLs

  • 11/26/2025

    PostalOne! Release 63.0.0.0 Mail.XML PROD WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ PROD Release 63.0.0.0

  • 11/26/2025

    PostalOne! Release 63.0.0.0 Mail.XML CAT WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ CAT Release 63.0.0.0

  • 08/08/2025

    Premium Forwarding Service Commercial External User Guide

  • 07/24/2025

    Informed Delivery Add-On Template

  • 06/18/2025

    PostalOne! Release 62.0.0.0 Mail.XML CAT WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ CAT Release 62.0.0.0

  • 06/18/2025

    PostalOne! Release 62.0.0.0 Mail.XML PrePROD WSDLs

  • 06/18/2025

    PostalOne! Release 62.0.0.0 Mail.XML TEM WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ TEM Release 62.0.0.0

  • 06/18/2025

    PostalOne! Release 62.0.0.0 Mail.XML PROD WSDLs

    This ZIP file contains the Web Services Description Language (WSDL) and XML Schema Definition (XSD) files for Mail.XML™ PROD Release 62.0.0.0

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