Klaviyo experienced a minor incident on September 16, 2025, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- monitoring Sep 16, 2025, 09:21 PM UTC
Sep 16, 17:21 EDT Resolved - This incident has been resolved. Sep 16, 17:17 EDT Monitoring - A fix has been deployed and system performance is improving. We continue to monitor closely and appreciate your patience throughout this incident. Sep 16, 17:05 EDT Identified - Starting 3:50pm US/Eastern on 9/16/25, we began observing delays in event-triggered flows. Users may see delays of up to 60 minutes. We're currently working on a fix. We’ll provide updates as soon as more information is available.