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Release Notes
03/16/2026

PTR2 Release Notes_DD_03_12_26

Release Notes
03/16/2026

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.

Release Notes
03/13/2026

March 22 2026 Release Notes

Release Notes
03/12/2026

PFSC Application 2.1 Release Notes 3-12-2026

This document describes the updates and enhancements for the PFSC application released on 3/12/2026 along with information on the new MyPFS feature released on 3/13/2026 as part of the My Products Portal.

Release Notes
03/11/2026

March 15 2026 Release Notes

Release Notes
03/11/2026

PTR2 Release Notes_DD_03_10_26

Release Notes
03/11/2026

USPS APIs Release Notes

For the latest updates, please review the USPS APIs Release Notes.

Release Notes
03/06/2026

PTR2 Release Notes_DD_03_07_26

Release Notes
03/04/2026

PTR2 Release Notes_DD_03_03_26

Release Notes
03/04/2026

March 8 2026 Release Notes

Release Notes
03/02/2026

PTR2 Release Notes_DD_02_28_26

Release Notes
03/01/2026

March 1 2026 Release Notes

Release Notes
02/26/2026

February 26 2026 Release Notes

Release Notes
02/26/2026

February 25 2026 Release Notes

Release Notes
02/24/2026

July 2026 Release Overview

Note: For the latest technical specifications, please see the July 2026 Price Change Release Notes as they are published. Mail.dat and Mail.XML updates required for this release.

Release Notes
02/22/2026