Outage in Klaviyo

Real-time segmentation delays

Resolved Minor
September 03, 2025 - Started 3 days ago - Lasted about 3 hours
Official incident page

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Outage Details

We are currently experiencing delays in real-time segment processing. Segments may be out of date by up to 3 hours. Flows triggered by segments, as well as segment-targeted forms, may be impacted. We are actively working to restore real-time processing and will continue to provide updates here.
Components affected
Klaviyo Segmentation
Latest Updates ( sorted recent to last )
RESOLVED 3 days ago - at 09/03/2025 01:08PM

Real-time segmentation is processing in real-time, and the incident has been resolved.

IDENTIFIED 3 days ago - at 09/03/2025 12:46PM

We have identified a root cause and are implementing a fix. We do not currently have an estimate for when processing will be back to real-time. We will post another update once a timeline is available.

INVESTIGATING 3 days ago - at 09/03/2025 09:53AM

We are currently experiencing delays in real-time segment processing. Segments may be out of date by up to 3 hours. Flows triggered by segments, as well as segment-targeted forms, may be impacted. We are actively working to restore real-time processing and will continue to provide updates here.

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