Announcements
06/08/2023
2023 Informed Delivery Promotion Webinar -- Scheduled June 15, 2023
Publications
06/08/2023
Publication 199 (Effective July 9, 2023): Intelligent Mail Package Barcode (IMpb) Implementation Guide for Confirmation Services and Electronic Payment Systems

This is a preview of Publication 199 which will be effective on July 9, 2023. For the current version please click here.

Tech Guides
06/08/2023
Guide to USPS Ship for eVS Shippers - Version 3
Tech Guides
06/08/2023
Guide to USPS Ship for New Shippers - Version 3
Contact Lists
06/08/2023
CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)
Contact Lists
06/08/2023
CASS™ Certified Products Guide: M L O C R Service Bureaus Cycle O - (Expires July 31, 2028)
Contact Lists
06/08/2023
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Data File Cycle O - (Expires July 31, 2028)
Contact Lists
06/08/2023
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Cycle O - (Expires July 31, 2028)
Contact Lists
06/08/2023
CASS™ Certified Products Guide: Z4CHANGE Data File Cycle O - (Expires July 31, 2028)
Contact Lists
06/08/2023
CASS™ Certified Products Guide: Z4CHANGE Cycle O - (Expires July 31, 2028)