As part of ongoing effort to strengthen USPS API infrastructure, USPS will be performing system maintenance for USPS APIs in PRODUCTION environment on Wednesday, August 12, 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, August 12, 2026, 9:00 PM ET End Time: Thursday, August 13, 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 Aug 05, 2026 - 03:32 EDT
This scheduled maintenance affects: eCommerce APIs (Shipping APIs) (Create Label, Get Rates).
