Data Files
07/11/2025
07/11/2025
Updated List: Service Type Codes for Intelligent Mail® Package Barcode (IMpb)
This document provides the updated service type codes for Intelligent Mail® Package Barcodes.
Tech Guides
07/10/2025
07/10/2025
Dimensioned Layout for the 4X6 Self Adhesive Container Barcode GS1Data Matrix Format
Supports GS1 Data Matrix barcode symbology
Announcements
07/10/2025
07/10/2025
Release Notes
07/10/2025
07/10/2025
USPS APIs Release Notes
For the latest updates, please review the USPS APIs Release Notes.
Contact Lists
07/10/2025
07/10/2025
Contact Lists
07/10/2025
07/10/2025
RDI™ Cycle O: Certified Products Guide (D) - (Expires July 31, 2028)
This document outlines the CASS/MASS certified vendors list for RDI™ Cycle O.
Contact Lists
07/10/2025
07/10/2025
Contact Lists
07/10/2025
07/10/2025
Contact Lists
07/10/2025
07/10/2025
Contact Lists
07/10/2025
07/10/2025