USPS APIs Maintenance - Aug 31, 2026
Scheduled for Aug 31, 21:00 EDT - Sep 1, 01:00 EDT
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Update
We will be undergoing scheduled maintenance during this time.
Scheduled
As part of ongoing effort to strengthen USPS API infrastructure, USPS will be performing system maintenance for USPS APIs in PRODUCTION environment on Monday, August 31, 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: Monday, August 31, 2026, 9:00 PM ET
End Time: Tuesday, September 1, 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
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: Monday, August 31, 2026, 9:00 PM ET
End Time: Tuesday, September 1, 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
This scheduled maintenance affects: eCommerce APIs (Shipping APIs) (Create Label, Get Rates).