Is Klaviyo Down?

As of 10:10 pm Eastern Time on Oct 8th, all delayed analytics have been processed and new analytics are processing in real time. This incident is now resolved. --- [2026-10-08T22:09:15.827-04:00] (monitoring) Delays have now largely cleared. We continue to monitor closely and will share another update shortly. --- [2026-10-08T21:21:27.761-04:00] (identified) Delays in analytics events have increased and now reach up to 1 hour and 45 minutes for all customers. Segments that rely on these events may not be up to date while our Engineering team actively processes the backlog. Campaign and flow sending, along with open and click events, remain unaffected. We are working to resolve this as quickly as possible and will share another update shortly. --- [2026-10-08T20:10:47.623-04:00] (identified) All customers are experiencing delays of up to an hour in analytics events, so Sent and Delivered reporting and received profile events may temporarily appear missing. Campaign and flow sending, along with open and click events, are not affected. We have identified the cause of the delays. We are working to resolve this as quickly as possible and will share another update shortly.

Customers can now log in to Klaviyo and load pages normally, and the system remains stable. This incident has been resolved. --- [2026-10-08T12:06:42.841-04:00] (monitoring) A fix has been deployed, and customers should now be able to log in to Klaviyo and load pages normally. If you were logged out during this incident, you may need to log in again. We continue to monitor closely and appreciate your patience throughout this incident. --- [2026-10-08T11:49:56.490-04:00] (identified) The issue has been identified and a fix is being implemented. --- [2026-10-08T11:29:27.315-04:00] (investigating) We are continuing to investigate issues preventing some customers from logging in to Klaviyo or loading pages in the app. We have not seen any impact to campaign or flow sending. We will share another update as soon as we have more information. --- [2026-10-08T11:00:35.232-04:00] (investigating) We are investigating reports that some customers are unable to log in to Klaviyo or are seeing pages load slowly or not at all. Our team is actively working to restore normal access. We will share another update as soon as we have more information.

Flow message sending has fully recovered and is processing at normal speeds. Delayed messages were not lost and have since been delivered. This incident has been resolved. --- [2026-09-21T13:43:24.651-04:00] (monitoring) Delays have now largely cleared but some customers may still see flow messages send later than expected. We continue to monitor closely and will share another update shortly. --- [2026-09-21T12:42:02.777-04:00] (monitoring) Flow message sending is recovering, and delays are clearing. Some customers may still see flow messages send later than expected as remaining processing catches up. We continue to monitor closely and appreciate your patience throughout this incident. --- [2026-09-21T12:26:46.887-04:00] (identified) We have identified the cause of the delays affecting flow message sending and are working on a fix. Some customers may continue to see flow messages send later than expected while we resolve this. We will share another update shortly. --- [2026-09-21T11:56:45.506-04:00] (investigating) We are continuing to investigate this issue. --- [2026-09-21T11:56:19.360-04:00] (investigating) We are investigating reports of delays affecting flow message sending. Some customers may see flow messages send later than expected. We will share another update as soon as we have more information.