Outage in Klaviyo
Processing delays
Resolved MinorIncident Report
Summary AI Generated
Klaviyo experienced a 17.6-hour service disruption caused by AWS infrastructure instability that affected analytics, reporting, segmentation, flows, and campaigns. Users encountered loading errors on flows and campaigns pages, segmentation delays of approximately 1.5 hours, outdated analytics data, and issues with segment-triggered flows and campaign audience targeting. The incident was resolved with all services restored to real-time processing, and no data was lost during the outage.
We are currently investigating an issue affecting analytics and reporting, flows, campaigns, and segmentation. This issue appears to be related to a disruption with an upstream service provider. Customers may experience errors or be unable to load flows and campaigns pages, see delays in real-time segmentation updates, and find analytics data temporarily unavailable.
Our team is actively working to resolve this. We'll provide updates as soon as more information is available.
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Latest Updates ( sorted recent to last )
RESOLVED
4 days ago - at 05/08/2026 07:05PM
Segmentation continues to process in real-time and is fully recovered. We determined the delays resulted from instability with an upstream infrastructure provider (AWS). This incident is now resolved.
MONITORING
4 days ago - at 05/08/2026 04:59PM
Segmentation has been restored to real-time processing, and campaign and forms analytics have now recovered. This was a reporting UI display issue only, no data was lost. Our engineering team continues to monitor closely until our upstream service provider has confirmed full recovery.
IDENTIFIED
4 days ago - at 05/08/2026 07:08AM
Segmentation has been restored to realtime processing. Our engineering team continues to restore the remaining affected analytics. We will continue to provide updates as real-time analytics functionality resumes.
IDENTIFIED
4 days ago - at 05/08/2026 03:46AM
A subset of customers are currently experiencing segmentation processing delays of approximately 1.5 hours and may find that analytics data is not fully up to date. Access to reporting pages has been restored and our engineering team is actively working to bring segmentation and analytics back to real time. We'll provide updates as soon as more information is available.
IDENTIFIED
5 days ago - at 05/08/2026 02:22AM
Our engineering team continues to investigate areas affected by an upstream service provider. Customers may experience processing delays for segmentation and analytics, and loading issues with reporting pages.
For campaigns, sends may not reach the most up-to-date audience due to segmentation delays. Segment-triggered flows may also fail to trigger correctly as profiles may not be added to or removed from segments as expected. We'll provide updates as soon as more information is available.
INVESTIGATING
5 days ago - at 05/08/2026 01:32AM
We are currently investigating an issue affecting analytics and reporting, flows, campaigns, and segmentation. This issue appears to be related to a disruption with an upstream service provider. Customers may experience errors or be unable to load flows and campaigns pages, see delays in real-time segmentation updates, and find analytics data temporarily unavailable.
Our team is actively working to resolve this. We'll provide updates as soon as more information is available.
Latest Klaviyo outages
Campaign and flow page loading errors - 4 days ago
Klaviyo Service Disruption - 7 days ago
API 503 Errors - 16 days ago
Real-time segmentation delays - about 2 months ago
Issues with Campaign Sending and Scheduling - 4 months ago
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