Technical Specifications
04/27/2026
Labeling List Changes Effective June 1, 2026

Effective June 1, 2026, the Postal Service™ will revise Labeling List(s) L007, L012, L014, L015, L016, L201, and L606 to reflect changes in mail processing operations. Mailers are expected to label according to these revised lists for mailings inducted on or after the June 1, 2026, effective date through July 31, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22702.

Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Publications
04/27/2026
Data Files
04/27/2026
Data Files
04/27/2026
Data Files
04/27/2026
Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Release Notes
04/24/2026
Data Files
04/24/2026
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.

Applications/ Forms
04/24/2026
USPS Ship (Formerly Package Platform) through IV-MTR® Data Delegation Request

This form allows a Delegating Company (i.e., Mailer ID [MID] Owner) to provide authorization for delegation of USPS Ship (Formerly PPC) data visibility to a Receiving Company within the IV-MTR application.

Applications/ Forms
04/24/2026
Enterprise Payment System (EPS) through IV-MTR® Data Delegation Request

This form allows a Delegating Company (i.e., Mailer ID [MID] Owner) to provide authorization for delegation of Enterprise Payment System (EPS) data visibility to a Receiving Company within the IV-MTR application.

Release Notes
04/24/2026
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.

Data Files
04/24/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.

Contact Lists
04/23/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

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