Publications
04/30/2026
PCC Insider April 2026 Edition
Publications
04/15/2026
Appendix B: ACS™ Frequently Asked Questions

This document provides frequently asked questions (FAQs) and answers about the Intelligent Mail® Barcode, Traditional ACS™, OneCode ACS™, Full Service ACS™, Single Source ACS™, and the Intelligent Mail® Package Barcode (IMpb).

Publications
04/02/2026
PCC Events (April 2026)
Publications
03/02/2026
PCC Events (March 2026)
Publications
02/27/2026
PCC Insider February 2026 Edition
Publications
01/30/2026
PCCAC Marketing and Communications Newsletter January 2026 Edition
Publications
01/30/2026
PCC Events (February 2026)
Publications
01/27/2026
Labeling List Changes Effective March 1, 2026

Effective March 1, 2026, the Postal Service™ will revise Labeling List(s) L001, L002, L004, L005, L007, L009, L012, L015, L016, L051, L201, L601, L605, 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 March 1, 2026, effective date through April 30, 2026, expiration date. The changes will be published in the Postal Bulletin, Issue #22696.

Publications
12/31/2025
PCC Insider December 2025 Edition
Publications
12/01/2025
PCC Events (December 2025)