Announcements
10/16/2025
INFORMATIONAL - USPS APIs System Maintenance October 20, 2025
Presentations
10/16/2025
PCCAC Strategic Innovation Sub-Committee presents “Exploring Communication Reach: Personal Feed vs. Private Group Dynamics”
Announcements
10/16/2025
PROCESSING AND DISTRIBUTION: Baltimore Marathon - October 16, 2025
Contact Lists
10/16/2025
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
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10/16/2025
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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10/16/2025
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)
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10/16/2025
CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)
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10/16/2025
CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)
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10/16/2025
CASS™ Certified Products Guide: M L O C R Service Bureaus Cycle O - (Expires July 31, 2028)
Contact Lists
10/16/2025
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Data File Cycle O - (Expires July 31, 2028)