Announcements
06/27/2025
INFORMATIONAL - The MSSC Announces EVS Email Addresses Decommissioned
Publications
06/27/2025
Labeling List Changes Effective August 1, 2025

Effective August 1, 2025, the Postal Service™ will revise Labeling List(s) L002, L004, L005, L007, L010, L012, L601, L605, and L606 to reflect changes in mail processing operations.

Technical Specifications
06/27/2025
Enterprise Payment System IV-MTR Data Elements
Announcements
06/26/2025
INFORMATIONAL: Postal Service Prepares for Network Distribution Center Entry and Presort Discount Elimination
Fact Sheets
06/26/2025
About Mailers' Technical Advisory Committee (MTAC) User Group 4

This document provides a brief description of MTAC User Group 4 for mail visibility and provides a contact for requesting to join the group.

Announcements
06/25/2025
INFORMATIONAL - Key Personnel Announcements in the Chief Technology and Engineering Group
Announcements
06/25/2025
INFORMATIONAL - Executive Retirement - Scott R. Bombaugh Chief Technology Officer & Executive Vice President
Announcements
06/25/2025
INFORMATIONAL - Priority Mail Open and Distribute (PMOD) Service Updates
Announcements
06/25/2025
DELIVERY - Southern Area – Alabama-Mississippi District - Rolling Fork Post Office (39159) – Resumed Operations
Data Files
06/25/2025
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.