• 07/09/2026

    2027 Add-Ons

  • 07/09/2026

    2027 Impact Messaging Promotion

  • 07/09/2026

    2027 Direct Mail Discovery Promotion

  • 07/09/2026

    2027 First-Class Mail Advertising Promotion

  • 07/09/2026

    2027 Integrated Technology Promotion

    GUIDEBOOK COMING SOON 

  • 07/09/2026

    2027 Tactile, Sensory & Interactive Promotion

    • Announcements
    07/09/2026
    INFORMATIONAL - USPS Local XChange
    Release Notes
    07/09/2026
    PTR2 Release Notes_DD_07_01_26
    Release Notes
    07/09/2026
    USPS APIs Release Notes

    For the latest updates, please review the USPS APIs Release Notes.

    Contact Lists
    07/09/2026
    CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)