Announcements
07/31/2026
INFORMATIONAL - Mail Spoken Here - July Issue
Announcements
07/31/2026
INFORMATIONAL - Executive Retirement - Dale E. Kennedy and Executive Appointment - Drew A. Mitchum
Announcements
07/31/2026
INFORMATIONAL - USPS Modernization Through Package Equipment Upgrades in August 2026
Announcements
07/31/2026
DELIVERY- Inchelium Post Office (99138) - Temporarily Closed
Fact Sheets
07/31/2026
Commonly Asked Mailpiece Design Analyst (MDA) Customer Questions

Commonly asked questions and answers from MDA customers.

Presentations
07/30/2026
PCCAC Certification Webinar-Periodicals-News You Can Use with Eric Kisgen

 

https://usps.zoomgov.com/rec/share/M8ps4fmgUbh7GETfcJPufzBUgDDu4JlzdkvNAZ_ovwwndtERHb5uI9dfkz-I2s5p.hXAHSXDOya6b8hK1

Passcode: #5+8T1%R

Announcements
07/30/2026
INFORMATIONAL - Electronic Verification System (eVS) Retirement
Announcements
07/30/2026
INFORMATIONAL - Security Enhancements to USPS.com
Fact Sheets
07/30/2026
Addresses API - Tech Sheet
Contact Lists
07/30/2026
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

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

Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)
Tech Guides
07/30/2026
Guide to USPS Ship
Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Service Bureaus Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: Z4CHANGE Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: Z4CHANGE Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: Vendor/Service Licensees Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: Vendor/Service Bureaus Licensees Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
CASS™ Certified Products Guide: DSF2® Licensees Data File Cycle O - (Expires July 31, 2028)
Contact Lists
07/30/2026
DSF2® Licensees Cycle O: Certified Products Guide - (Expires July 31, 2028)
Contact Lists
07/30/2026
DPV® Licensees Data File Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)