Announcements
06/28/2025
06/28/2025
Announcements
06/27/2025
06/27/2025
Announcements
06/27/2025
06/27/2025
Publications
06/27/2025
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
06/27/2025
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