Announcements
01/27/2026
INFORMATIONAL - Updating Winter Storm Fern Continuing Extension Embargo for Lives Through Sunday February 1
Announcements
01/27/2026
PCC Innovation Challenge Guide
Announcements
01/27/2026
The All New-PCC Innovation Challenge
Announcements
01/27/2026
INFORMATIONAL - UPDATE to PME Service Guarantee Suspension Extended Further
Release Notes
01/27/2026
01_27_26_PTR2 Release Notes
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.

Technical Specifications
01/27/2026
NCOA API Specifications
Data Files
01/27/2026
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)

This document provides the updated service type codes for  Intelligent Mail® Package Barcodes.

Announcements
01/26/2026
INFORMATIONAL - Update: Priority Mail Express (PME) Service Guarantee Suspension Extended During Winter Weather Impacts
Announcements
01/26/2026
INFORMATIONAL - Updating Winter Storm Fern Continuing Extension Embargo for Lives