Outage in Klaviyo

Delayed flow processing and message sending

Resolved Major
May 23, 2025 - Started 9 days ago - Lasted about 4 hours
Official incident page

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Outage Details

Starting at approximately 11 AM (US Eastern) we identified an issue impacting flows affecting both flow evaluations and flow message sending. We are investigating the issue and will continue to post updates here.
Latest Updates ( sorted recent to last )
RESOLVED 9 days ago - at 05/23/2025 08:25PM

This incident has been resolved.

MONITORING 9 days ago - at 05/23/2025 07:31PM

At approximately 2:55 PM (US Eastern), we have addressed the underlying issue and that delayed flow functionality. Flow messages sending is now real time and any flows that should have triggered are expected to trigger on a delay. Any delayed flow messages will be sent.

IDENTIFIED 9 days ago - at 05/23/2025 04:38PM

We have identified a database issue affecting flow functionality, originally beginning at 11:00 AM (US Eastern). This includes flow message sending, flow triggering, and flow processing. Campaign messaging and event processing is unaffected. We are working to fix the issue and will keep this page updated with further developments.

INVESTIGATING 9 days ago - at 05/23/2025 04:22PM

Starting at approximately 11 AM (US Eastern) we identified an issue impacting flows affecting both flow evaluations and flow message sending. We are investigating the issue and will continue to post updates here.

Latest Klaviyo outages

Delays in Email Sending - about 1 month ago
Issues with Klaviyo Campaigns - about 2 months ago
Campaign Analytics Not Populating - about 2 months ago

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