Announcements
04/08/2026
INFORMATIONAL - USPS APIs Critical Maintenance April 8, 2026
Announcements
04/07/2026
DELIVERY: MILITARY POST OFFCE (MPO) 09309 - RESUMED MAILING SERVICE
Announcements
04/07/2026
INFORMATIONAL - Package Tracking API Provisioning - Reminder
Fact Sheets
04/07/2026
IMpb/IMmb Electronic File Transmission Requirements
Quick Service Guides
04/07/2026
Enterprise Payment System (EPS) Deposit Instructions

These instructions include general technical information and instructions for sending electronic funds into your EPS account. The information here is designed for trust customers (and debit customers who need to initiate a fund transfer to cover a debit return problem).