Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Release Notes

These release notes summarize new features and enhancements implemented in deployments to the IV-MTR application.

PFSC Application 3.0 Release Notes 11-10-2026

PFSC Release Notes for the enhancement release on 11/10/2026.

Premium Forwarding Service Commercial External User Guide

User Guide for the Premium Forwarding Service Commercial application. 

INFORMATIONAL - REMINDER - FY2027 Peak Season Network Update Webinars Begin

News You Need to Know from MTAC- October 2026

Informed Visibility Mail Tracking & Reporting Machine Count

List of US Postal Service machines by site, including a description of each machine.

***Updated - New Areas*** - Area District 5-digit ZIP Codes (AREADIST_ZIP5.TXT)

City/State ZIP Code Weekly Compare

3 Digit ZIP/AISU Office List (AISUREPT.TXT)

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®.

AIS Congressional District File (CONG_DIST.TXT)

AIS County Name Table Layout (AISCNTY.TXT)

AMS County Name Table (COUNTY_NAME_TABLE.TXT)

AMS Address Report: AISU Mailing List (ADDRREPT.TXT)

AISU ZIP Code Record and AISU Address Record Descriptions (AISULOUT.TXT)

AISU ZIP Code File (AISUZIPS.TXT)

AISU Contact Information (AISUADDR.TXT)

Area District Finance File Specification (AREA_DIST_LAYOUT.TXT)

Area District Finance File (AREADIST.TXT)

Area/District 3-digit and 5-digit ZIP Code Assignments (AREA_DIST_ZIP.TXT)

Move to Competitive Street Addressing (MTC SA) List

This .txt file contains the MTC SA List.

Additional Accounts Information

Additional Accounts Information sheet for completion with Mailer ID (MID) Application.

Mailer Identifier (MID) Application

Complete the following application to request a Mailer Identifier (MID) for use in the Intelligent Mail® container barcode, Intelligent Mail® tray barcode, or Intelligent Mail® barcode. The information provided will not be disclosed outside the Postal Service.

DELIVERY - Westpac Area – Arizona – New Mexico District Blue Post Office – Resume Operations

PROCESSING AND DISTRIBUTION - Update - Des Moines, IA Processing and Distribution Center (P&DC) Reopened