As part of our ongoing effort to strengthen USPS APIs Delivery Services infrastructure, USPS will be performing system maintenance in PRODUCTION environment on Wednesday, 2026-02-11 , 09:00 PM ET for 4 hours.
Description: USPS will be making modifications to the USPS APIs Delivery Services PRODUCTION environment which will improve overall performance and stability.
Start date/Time : 2026-02-11 09:00 PM ET End date/ Time: 2026-02-12 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 Jan 29, 2026 - 11:19 EST
This scheduled maintenance affects: eCommerce APIs (Shipping APIs) (Create Label, Get Rates).
