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Applications/ Forms
11/12/2026

Informed Visibility® Mail Tracking & Reporting (IV®-MTR) Piece-Level One-Time Query Request

This form is to help users prepare to submit a one-time query for piece-level data, either on their own through the IV-MTR web application or assistance from the IV Solutions Center.

Data Files
11/12/2026

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.

Data Files
11/12/2026

Z4 Info File

A downloadable ZIP file containing information related to the Z4 Info File

Data Files
11/12/2026

Early Warning System (EWS002C0.ZIP)

This file is the EWS production file and is updated weekly. This file contains the Early Warning System data file for the CASS™ and MASS™ certification process.

Announcements
11/10/2026