INFORMATIONAL: Domestic HAZMAT Handling and Noncompliance Fees USPS Returns Update

DELIVERY - Camp Sherman Post Office (97730) Resume Operations

DELIVERY - Nespelem Post Office (99155) Resume Operations

INFORMATIONAL - Commercial System Release – July 30, 2026

January 2027 Release Overview

PTR2 Release Notes_DD_07_25_26

DELIVERY - Beverly Post Office (99321) Temporarily Closed

Mail.xml Technical Specifications R64.0.0.0

Mail.dat Technical Specifications R64.0.0.0

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Development Tracker

This document provides a list of active IV-MTR work to be as well as items completed in FY25.

*Please note, Postal Pro is the only source for a current IV-MTR Development log as updates will be made on an ongoing basis.

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.

Mail Service Provider (MSP) - Full-Service Certified Mailers

A Mail Service Provider (MSP) offers a variety of solutions to prepare and present Full-Service presort mailings. For more information regarding Certified MSPs, please follow this link: https://postalpro.usps.com/full-service-cert/fact-sheet

PTR2 Release Notes_DD_07_23_26

PCCAC Certification Webinar- Mailpiece Design Overview with Michael Conley

https://usps.zoomgov.com/rec/share/CJQ3QBsk2jWBNdlDfokTt3Jff8hE5Weooar9FzmAEqPrgkF4DypEHxVORWjFPSaJ.NgMWY_cJabT_zsVn

Passcode: or=C16eP

DELIVERY - Roy Miller Post office (78405) – Temporarily Suspended

DELIVERY - Camp Sherman Post Office - Temporarily Closed

INFORMATIONAL - Duplicate Refunds Reversal

CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)

RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

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

CASS™ Certified Products Guide: M L O C R Mailers/Users Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Mailers/Users Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Service Bureaus Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Service Bureaus Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: M L O C R Hardware Manufacturers Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: Z4CHANGE Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: Z4CHANGE Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: Vendor/Service Licensees Data File Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: Vendor/Service Bureaus Licensees Cycle O - (Expires July 31, 2028)

CASS™ Certified Products Guide: DSF2® Licensees Data File Cycle O - (Expires July 31, 2028)

DSF2® Licensees Cycle O: Certified Products Guide - (Expires July 31, 2028)

DPV® Licensees Data File Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

DPV® Licensees Cycle O: Certified Products Guide - (Expires July 31, 2028)

CASS™ Software Manufacturers Data File Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

CASS™ Software Manufacturers Cycle O - (Expires July 31, 2028)

CASS™/MASS™ Certified Products Guide - All Sections Data Files Cycle O - (Expires July 31, 2028)

This document contains the certified vendors list for CASS™ and MASS™ products for Cycle O.

Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

PCC National Monthly Touchpoint (July)

https://usps.zoomgov.com/rec/share/xzCHtqMXTJibWN6dCDrhE3F9q15HGLKcikx6LomFwHv3WoqLIo73aYKp25PuCJyR.aPOzBBl6O8AZ3_JK

Passcode: 743rE6b!

July 21, 2026

DELIVERY - Kellerton Post Office (50133) – Suspended Temporarily

DELIVERY - International Suspension of Mail Service - Kiribati -Effective July 24, 2026

DELIVERY - Irvington Post Office (07111) - Temporarily Closed

INFORMATIONAL - USPS APIs System Release Notification – July 29, 2026

INFORMATIONAL - MyPFS Delivers a Faster, Smarter Support Experience for PFSC Customers

INFORMATIONAL - South Atlantic Region – Greensboro, NC Regional Processing and Distribution Center (RPDC) – Power Outage

PTR2 Release Notes_DD_07_21_26

DELIVERY - Paulina Post Office - Temporarily Closed

INFORMATIONAL - Commercial System Releases – Week of July 25

INFORMATIONAL - Informed Visibility Mail Tracking & Reporting (IV-MTR) – Renaming of Existing Data Fields

July 26 2026 EPS/eBill R8.6.0.0 Release Notes