On October 8, 2026, all Klaviyo customers experienced analytics event processing delays lasting approximately 2.2 hours, with delays peaking at up to 1 hour and 45 minutes. This caused Sent and Delivered reporting, received profile events, and segment updates to appear incomplete or missing, while campaign and flow sending and open/click tracking remained unaffected. The engineering team processed the backlog and fully resolved the incident by 10:10 PM ET, with all analytics returning to real-time processing.
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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.
Delays have now largely cleared. We continue to monitor closely and will share another update shortly.
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.
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.
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