Outage report · Partial outage
Klaviyo outage on Nov 4, 2026
Klaviyo app slowness
What happened
Klaviyo reported a partial outage starting Nov 4, 2026, 16:17 UTC, affecting Klaviyo App. The incident is still open on the vendor's status page.
- Klaviyo had reported 5 other partial or major outages in the 90 days before it.
- 12 other vendors we track reported a significant incident within 12 hours of it.
Latest update from Klaviyo
We are seeing early signs of improvement in load times across the Klaviyo app. Some pages, including reporting and metrics, may still be slow or show errors. Our team is continuing to investigate. We will share another update as soon as we have more information.
What our independent monitoring saw
Our checks of Klaviyo's public login and customer-facing pages kept responding during this incident, so the problem was most likely inside the product (for example a specific feature, region or integration) rather than a full site outage.
Other outages around the same time
Significant incidents other vendors reported within 12 hours of this one.
Klaviyo's overall reliability
Klaviyo has a reliability score of 51.8/100, with 99.25% effective uptime and 13 incidents over the last 90 days.
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