Announcements
06/26/2025
06/26/2025
User Guides
06/26/2025
06/26/2025
Mailing and Shipping Solutions Center (MSSC) Topics
List of topics the MSSC can assist with. To reach the MSSC, email us at MSSC@usps.gov or call 1-877-672-0007 from 7:00AM – 7:00PM CT.
Fact Sheets
06/26/2025
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
06/25/2025
Announcements
06/25/2025
06/25/2025
Announcements
06/25/2025
06/25/2025
Announcements
06/25/2025
06/25/2025
Data Files
06/25/2025
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.
Announcements
06/24/2025
06/24/2025