Monitoring - To comply with USPS standards and avoid label errors or future USPS non-compliance fees, please be sure to enter all package dimensions (L x W x H) when creating your label.
Sep 30, 2026 - 15:29 PDT
Stamps.com Online (Printing Postage Using a Web Browser)
Operational
Stamps.com Software (Printing Postage Using our Windows Application)
Operational
Resolved -
Stamps.com Engineers have fixed the cubic rating issue and all systems are functioning normally. Thank you for your patience.
Sep 22, 17:46 PDT
Investigating -
We are aware of reports of inaccurate rates for some USPS mailing services through Stamps.com. Our engineering team is actively investigating, and we will post another update as soon as more information is available.
Sep 21, 13:27 PDT
Resolved -
Stamps.com Engineers have fixed the technical issue and all systems are functioning normally. Thank you for your patience.
Sep 22, 16:09 PDT
Investigating -
Stamps.com Engineers have identified an issue that may temporarily affect some of our customers' ability to generate rates for Priority Mail and UPS services through our Windows Clients. The website is unaffected and should be used as a workaround for now. We are working to quickly resolve this issue and will provide an update when it is available. We apologize for the inconvenience.
Sep 22, 13:29 PDT