INFORMATIONAL - Final Update - USPS Ship INCIDENT # 10234251 PEW Data Feed Now Current

Tracking API Access Control Changes Release Overview

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.

PAVE™ 2026 Advisory Cycle S Extension

This advisory is to inform you that there will be no PAVE Cycle S/MAC Batch Certification testing for the 2026 Price Change releases. USPS has decided to extend the current PAVE process until January 19, 2027, and will not be testing or accepting files for testing during the transition into 2026.

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 LACS^Link®.

Addressing Fact Sheet for First-Class Flats

This document is for mailers who are sending flat-size mail (such as large envelopes) at Automation and Presorted First-Class Mail prices. To use these prices, you must mail at least 500 pieces at a time, prepared and sorted according to Postal Service guidelines.

Presort Accuracy, Validation, and Evaluation (PAVE™) Certified Products List

This document provides a listing of all PAVE™ certified products.

INFORMATIONAL - Retirement of Dane A. Coleman, Vice President of Processing Operations

PROCESSING AND DISTRIBUTION: Unload Delays at Kansas City, MO and Louisville, KY Processing Facilities

Mail.dat Technical Specifications R63.0.0.0