Scheduled Upstream USPS API Maintenance

Scheduled for Nov 1, 17:00 PST - Nov 2, 01:00 PST

Scheduled

USPS is performing scheduled maintenance on its Tracking 3.0 and Subscription Tracking 3.0 services from 8:00 PM ET Sunday, November 1, to 4:00 AM ET Monday, November 2 (5:00 PM to 1:00 AM PT). During this window, some USPS tracking updates may be delayed. Label purchases are not affected. Delayed tracking events will be delivered once USPS completes its maintenance.

Posted Oct 30, 2026 - 09:53 PDT

This scheduled maintenance affects: Carriers (USPS APIs).