Announcements
06/17/2025
Post Office/ZIP Code Entries for Postal Bulletin 6/26/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 6/26/2025.

Announcements
06/17/2025
User Guides
06/17/2025
Applying for Access to Informed Visibility® Mail Tracking & Reporting (IV®-MTR)

This presentation provides instructions for applying for access to the IV Mail Tracking & Reporting application (IV-MTR). The instructions include how to register for a Business Customer Gateway (BCG) account, add the IV-MTR service in the BCG, and how to sign in to the IV-MTR portal to begin using the service. 

Fact Sheets
06/16/2025
Tech Guides
06/13/2025
Informed Delivery Mail.XML Mailer Guide

This is a guide for submitting campaigns to PostalOne! via Mail.XML electronic documentation (eDoc).

Tech Guides
06/13/2025
Informed Delivery Mail.dat Mailer Guide

This is a mailer guide for creating campaigns via PostalOne! through Mail.dat eDoc submission.

Data Files
06/11/2025
Data Files
06/10/2025
Release Notes
06/10/2025
May 2025 Release Overview

Release Overview May 2025 

Technical Specifications
06/10/2025
Technical Specifications
06/10/2025
Program Requirements
06/06/2025
Data Files
06/02/2025
May 2025 Nixie Volume

This spreadsheet contains the UAA statistics for May 2025.

Announcements
05/30/2025
Post Office/ZIP Code Entries for Postal Bulletin 6/12/2025

This spreadsheet provides details on the Post Office/ZIP Code entry changes for Postal Bulletin issue 6/12/2025.

Publications
05/30/2025
Release Notes
05/29/2025