Data Files
07/02/2026
Undeliverable-as-Addressed (UAA) Statistics by Mailing Industry Quarterly Report (Q3 FY26)

ACS Nixie stats by industry for FY26 Q3.

Announcements
07/02/2026
INFORMATIONAL: Commercial System Releases - July 11 – July 17
Release Notes
07/02/2026
July 12 2026 Release Notes
Data Files
07/02/2026
Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
07/02/2026
Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

 

Publications
07/01/2026
PCC Events (July 2026)
Announcements
07/01/2026
INFORMATIONAL: Mail Spoken Here - June Issue
Announcements
07/01/2026
INFORMATIONAL: USPS APIs – INCIDENT #10802561 - Issues Processing Return Labels
Announcements
07/01/2026
INFORMATIONAL: USPS Addresses API - Immediate Action Required to Continue Accessing USPS Addressing Information
Announcements
07/01/2026
INFORMATIONAL: New EU Customs Fees - Starting July 1, 2026