Announcements
10/08/2026
DELIVERY - Crucible Post Office (15325) - Suspended Temporarily
Release Notes
10/08/2026
October 18 2026 PO! 64.1.2.0 Release Notes

Coming Soon

Announcements
10/08/2026
INFORMATIONAL - Scheduled Maintenance for October 17, 2026 – Possible Disruption with USPS Payments API
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10/08/2026
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
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10/08/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.

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10/08/2026
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)
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10/08/2026
CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)
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10/08/2026
CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)
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10/08/2026
CASS™ Certified Products Guide: M L O C R Service Bureaus Cycle O - (Expires July 31, 2028)
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10/08/2026
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Data File Cycle O - (Expires July 31, 2028)