Data Files
01/16/2026
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.

Contact Lists
01/16/2026
Presort Accuracy, Validation, and Evaluation (PAVE™) Certified Products List

This document provides a listing of all PAVE™ certified products.

Announcements
01/15/2026
INFORMATIONAL - USPS Enforcement of Customs Data Requirements for Military and Diplomatic Mail
Announcements
01/15/2026
INFORMATIONAL - PMG NPF Invitation with Video
Announcements
01/15/2026
INFORMATIONAL - Upcoming USPS.com Maintenance on January 24, 2026
Announcements
01/15/2026
INFORMATIONAL - Enterprise Payment System (EPS) – INCIDENT 10334117 Update - Online User Impact and Expected Resolution
Announcements
01/15/2026
INFORMATIONAL - USPS Reports On-Time Delivery Gains, Higher Customer Satisfaction for Holiday Surge
Announcements
01/15/2026
INFORMATIONAL - Daily Migration Zoom Calls to Support The WebTools Migration
Contact Lists
01/15/2026
CASS™ Certified Products Guide: Residential Delivery Indicator Cycle O - (Expires July 31, 2028)
Contact Lists
01/15/2026
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)

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