Release Notes
06/05/2026
June 11 2026 USPS Ship R27.0.3.0 Release Notes
Release Notes
06/04/2026
June 4 2026 USPS Ship R27.0.2.0 Release Notes
Release Notes
06/04/2026
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
05/29/2026
July 2026 Release Notes
Release Notes
05/28/2026
PTR2 Release Notes_DD_05_30_26
Release Notes
05/27/2026
PTR2 Release Notes_DD_05_28_26
Release Notes
05/27/2026
PTR2 Release Notes_DD_05_26_26
Release Notes
05/27/2026
USPS APIs Release Notes

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

Release Notes
05/21/2026
PTR2 Release Notes_DD_05_21_26
Release Notes
05/20/2026
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.