As part of ongoing effort to strengthen USPS API infrastructure, USPS will be performing system maintenance for USPS APIs in PRODUCTION environment on Wednesday, July 29, 2026, 9:00 PM EST for 4 hours.
Description: The impacted systems will be done in a rolling fashion and not all at once. The service disruption duration should only be for several minutes.
Start Time: Wednesday, July 29, 2026, 9:00 PM ET End Time: Thursday, July 30, 2026, 01:00 AM ET
Please be aware that during the maintenance window, you may encounter occasional, brief errors. However, all systems will remain operational, and no significant issues are expected.
If you experience any other issues during the maintenance window, please contact the Client Support Technical Services Team at ClientSupportTechServices@pb.com
Posted Jul 21, 2026 - 12:10 EDT
This scheduled maintenance affects: eCommerce APIs (Shipping APIs) (Create Label, Get Rates, Pickups, Tracking).
