Release Notes
06/10/2025
May 2025 Release Overview

Release Overview May 2025 

Technical Specifications
06/10/2025
Mail.xml Technical Specifications R62.0.0.0
Technical Specifications
06/10/2025
Mail.dat Technical Specifications R62.0.0.0
Announcements
06/10/2025
INFORMATIONAL: USPS APIs System Maintenance
Announcements
06/10/2025
INFORMATIONAL: Commercial Systems Releases - June 15, 2025
Announcements
06/09/2025
PCCAC Communications and Marketing – Newsletter
Announcements
06/09/2025
PTR Modernization

PTR is being modernized to deliver a best-in-class visibility solution for customers. The new solution, PTR 2, will provide a scalable and highly available platform to support continued package volume growth and evolving business functionality to deliver exceptional customer value.

Data Files
06/09/2025
Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACSLink®.

Announcements
06/06/2025
DELIVERY WestPac Area ID-MT-OR District Office Baker Post Office - Temporarily Closed
Presentations
06/06/2025
Central AIM Meeting - USPS Mailing Promotions