Scheduled Upstream USPS API Maintenance

Scheduled for Nov 5, 17:00 - 21:00 PST

Scheduled

USPS is performing a scheduled rolling release of its APIs on Thursday, November 5, from 8:00 PM to 12:00 AM ET (5:00 PM to 9:00 PM PT). During this window, USPS domestic and international label purchases, SCAN Form creation, and Open and Distribute (PMOD) requests may fail intermittently for a few minutes at a time. Failed requests can be retried. Tracking and account authentication are not affected.

Posted Oct 30, 2026 - 08:55 PDT

This scheduled maintenance affects: Carriers (USPS APIs).