Klaviyo experienced a minor incident on March 27, 2026, lasting —. The incident has been resolved; the full update timeline is below.
Update timeline
- monitoring Mar 27, 2026, 05:15 AM UTC
Mar 27, 01:15 EDT Resolved - Real-time segmentation is processing in real-time, and this incident has been resolved. Mar 27, 00:46 EDT Monitoring - Starting around 8:15 PM US Eastern 26th March, we began seeing delays in real-time segment processing for a subset of customers. Segments may be out of date by up to 2.5 hours. Engineering have identified a solution and are working to implement the fix shortly. We will continue to provide updates as real-time segmentation functionality is restored.