Tech Guides
11/12/2025
Guide to USPS Ship
Tech Guides
11/12/2025
USPS Ship Tech Sheet

USPS Ship is a modernized platform enabling commercial package payment, verification, and end-to-end visibility for a wide array of domestic and international products.

Announcements
11/10/2025
INFORMATIONAL - CY2026 Promotions Webinar
Announcements
11/10/2025
INFORMATIONAL - Service Improvement through Increased Capacity
Technical Specifications
11/10/2025
National Change of Address - API
User Guides
11/10/2025
2026 Integrated Technology Enrollment Guide
Data Files
11/10/2025
Cumulative Listing of ZIP Codes Covered by the LACS Database

This document provides a cumulative listing of ZIP Codes covered by the LACS database for LACSLink®.

Announcements
11/07/2025
DELIVERY - Atlantic Area – North Carolina District Chapel Hill PO (27514) - Resumed
User Guides
11/07/2025
Viewing MGI Credit Balances and Postage Statements
Announcements
11/07/2025
Updates from the National PCC Program Office