Monitoring - Canada Post: Effective October 11, 2025, Canada Post and the CUPW moved from a full, national strike to rotating strikes. Postal services will start resuming next week, but delays should still be expected due to uncertainty and instability.
Canada Post will first process mail and parcels already in the network. New commercial volumes won’t be accepted until Wednesday, October 15, and on-time delivery guarantees and date-specific Neighbourhood Mail remain suspended. Read more.
Sep 26, 2025 - 06:34 PDT
Monitoring - To comply with new customs regulations, carriers, including USPS and others, are now requiring six-digit Harmonized System (HS) codes on all international commercial shipments.
Effective September 1, 2025, shipments without these codes may be delayed or rejected by customs authorities.
Aug 25, 2025 - 14:51 PDT
Stamps.com Online (Printing Postage Using a Web Browser)
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Operational
Stamps.com Software (Printing Postage Using our Windows Application)
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Operational
Resolved -
The earlier AWS-related service disruption has been resolved. Endicia software and API operations have returned to normal as of 15:53 PDT, according to AWS. We’ll continue to monitor for stability, but no further impact is expected.
Oct 20, 18:22 PDT
Update -
We are continuing to monitor for any further issues.
Oct 20, 18:03 PDT
Update -
We are continuing to monitor for any further issues.
Oct 20, 18:00 PDT
Update -
We are continuing to monitor for any further issues.
Oct 20, 17:30 PDT
Update -
We are continuing to monitor for any further issues.
Oct 20, 17:00 PDT
Update -
We are continuing to monitor for any further issues.
Oct 20, 16:30 PDT
Monitoring -
Stamps software may currently be experiencing some performance issues due to the ongoing AWS service issue. We are actively monitoring their status and its impact on our platform. We will provide updates as they become available.
Resolved -
The issue impacting some customers’ ability to view transactions in their Printed Postage History Report, Refund Section, and SCAN Forms has been resolved. We apologize for the inconvenience and thank you for your patience. If you are still having issues, please contact us.
Oct 10, 11:11 PDT
Update -
We are continuing to investigate this issue.
Oct 10, 10:35 PDT
Investigating -
Stamps.com Engineers have identified an issue that may affect some of our customers' ability to login, as well as see transactions in their Printed Postage History Report, Refund Section, and SCAN Form. We are working to quickly resolve this issue and will provide an update when it's available. We apologize for the inconvenience.
Oct 10, 10:33 PDT
Resolved -
This incident has been resolved.
Oct 9, 09:49 PDT
Update -
We are continuing to investigate this issue.
Oct 8, 12:59 PDT
Investigating -
Stamps.com Engineers have identified an issue that may temporarily affect some of our customers' ability to print postage and shipping labels. An error message of "Conversation-out-of-sync" intermittently appears when attempting to print. NOTE: Attempting to print again will allow you to continue printing, however, you may intermittently see the error message appear. We are working to quickly resolve this issue and will provide an update when it is available. We apologize for the inconvenience.
Oct 8, 08:12 PDT
Resolved -
This incident has been resolved.
Oct 8, 08:07 PDT
Investigating -
Stamps.com Engineers have identified an issue that may temporarily affect some of our customers' ability to print postage and shipping labels. An error message of "Conversation-out-of-sync" intermittently appears when attempting to print. NOTE: Attempting to print again will allow you to continue printing, however, you may intermittently see the error message appear. We are working to quickly resolve this issue and will provide an update when it is available. We apologize for the inconvenience.
Oct 7, 18:11 PDT