Announcements
04/24/2026
DELIVERY - Military Post Office (MPO) 09833, 09839, 09877 Resume Mailing Service
Announcements
04/24/2026
DELIVERY - Diplomatic Post Office (DPO) 09830, 09847 Resume Mailing Service
Release Notes
04/24/2026
April 26 2026 PostalOne! R63.2.1.0 Release Notes
Release Notes
04/24/2026
PTR2 Release Notes_DD_04_23_26
Applications/ Forms
04/24/2026
USPS Ship (Formerly Package Platform) through IV-MTR® Data Delegation Request

This form allows a Delegating Company (i.e., Mailer ID [MID] Owner) to provide authorization for delegation of USPS Ship (Formerly PPC) data visibility to a Receiving Company within the IV-MTR application.

Applications/ Forms
04/24/2026
Enterprise Payment System (EPS) through IV-MTR® Data Delegation Request

This form allows a Delegating Company (i.e., Mailer ID [MID] Owner) to provide authorization for delegation of Enterprise Payment System (EPS) data visibility to a Receiving Company within the IV-MTR application.

Data Files
04/24/2026
Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Operation Codes List

This spreadsheet provides a list of operation codes (opcodes), also known as Scan Event Codes, for the IV-MTR application.

Announcements
04/23/2026
INFORMATIONAL - Postal Service Updates for July 2026 S&DC Activations
Contact Lists
04/23/2026
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
04/23/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.