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Announcements
07/25/2026

INFORMATIONAL - New EU Customs Fees - Starting July 1, 2026

Announcements
07/25/2026

INFORMATIONAL - New Regulations - U.S. Customs and Border Protection (CBP)

Announcements
07/24/2026

INFORMATIONAL: Domestic HAZMAT Handling and Noncompliance Fees USPS Returns Update

Announcements
07/24/2026

DELIVERY - Camp Sherman Post Office (97730) Resume Operations

Announcements
07/24/2026

DELIVERY - Nespelem Post Office (99155) Resume Operations

Announcements
07/24/2026

INFORMATIONAL - Commercial System Release – July 30, 2026

07/24/2026

January 2027 Release Overview
07/24/2026

PTR2 Release Notes_DD_07_25_26

Announcements
07/24/2026

DELIVERY - Beverly Post Office (99321) Temporarily Closed

Technical Specifications
07/24/2026

Mail.xml Technical Specifications R64.0.0.0

Technical Specifications
07/24/2026

Mail.dat Technical Specifications R64.0.0.0

Data Files
07/24/2026

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.

Release Notes
07/24/2026

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.

Contact Lists
07/24/2026

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

Release Notes
07/23/2026

PTR2 Release Notes_DD_07_23_26

Presentations
07/23/2026

PCCAC Certification Webinar- Mailpiece Design Overview with Michael Conley

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

Passcode: or=C16eP

Announcements
07/23/2026

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

Announcements
07/23/2026

DELIVERY - Camp Sherman Post Office - Temporarily Closed

Announcements
07/23/2026

INFORMATIONAL - Duplicate Refunds Reversal

Contact Lists
07/23/2026

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

Contact Lists
07/23/2026

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
07/23/2026

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

Contact Lists
07/23/2026

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

Contact Lists
07/23/2026

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

Contact Lists
07/23/2026

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

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INFORMATIONAL - New EU Customs Fees - Starting July 1, 2026

INFORMATIONAL - New Regulations - U.S. Customs and Border Protection (CBP)

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

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

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

PTR2 Release Notes_DD_07_23_26

PCCAC Certification Webinar- Mailpiece Design Overview with Michael Conley

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)

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)

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