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Outage in Klaviyo

Klaviyo Service Disruption

Resolved Major
May 05, 2026 - Started 29 days ago - Lasted 2 days
Official incident page

Incident Report

Summary AI Generated

Klaviyo experienced a major service disruption lasting 49.7 hours that affected access to klaviyo.com, APIs, and message sending across all core platform functions including email campaigns, mobile push notifications, analytics, and user login capabilities. The outage prevented customers from logging in, sending campaigns or flows, and processing events during the incident period. All services were fully restored with klaviyo.com access returning first, followed by progressive recovery of dependent services, and final completion of background data reconciliation and integration repairs.

Klaviyo is currently experiencing a service disruption affecting access to klaviyo.com, our APIs, and message sending. Customers may be unable to log in, send campaigns or flows, or have their events processed during this time. Our engineering team is actively investigating the root cause. We'll provide updates as soon as more information is available.

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Latest Updates ( sorted recent to last )
RESOLVED 26 days ago - at 05/07/2026 11:02PM

All Klaviyo services have been fully restored and final recovery work is complete. We appreciate your patience throughout this incident. This incident has been resolved.

MONITORING 27 days ago - at 05/07/2026 03:48PM

Klaviyo services remain restored and operating as expected. Most recovery and repair work is now complete. Remaining work is focused on restoring webhook connections for a subset of WooCommerce and Eventbrite integrations and a subset of campaign analytics repairs, neither of which is affecting customer use of the platform. Our team is continuing to monitor closely.

MONITORING 28 days ago - at 05/06/2026 09:30PM

Klaviyo services remain restored and operating as expected. Final background recovery and repair work is ongoing, but is not affecting customer use of the platform. Our team is continuing to monitor closely.

MONITORING 28 days ago - at 05/06/2026 03:59PM

Klaviyo services have been restored. Some background data reconciliation and recovery work is still in progress. This is not affecting overall system availability or customer use of the platform. Our team is continuing to monitor closely as we complete final repair efforts.

MONITORING 28 days ago - at 05/06/2026 05:59AM

Access to klaviyo.com and core platform services has been restored. The majority of platform areas have returned to normal operation, with many affected services recovering automatically as infrastructure came back online. Our team is continuing to monitor platform stability and is actively working through remaining data repairs, including unsubscribe processing and analytics recovery. We will share further updates as this work progresses.

MONITORING 28 days ago - at 05/06/2026 02:53AM

Our engineering team has restored the impacted services and confirmed that systems have resumed functioning as intended. All Campaign/Flow messages impacted which are able to be replayed are currently sending. We're currently monitoring performance and will continue to update as incident is resolved.

IDENTIFIED 28 days ago - at 05/06/2026 01:38AM

We are seeing recovery across APIs, event ingestion, and subscriptions. Our team continues to work toward restoring full functionality.

IDENTIFIED 28 days ago - at 05/06/2026 12:57AM

Recovery is continuing to progress, and additional services are coming back online. Our team remains actively engaged, and we'll provide another update shortly.

IDENTIFIED 28 days ago - at 05/06/2026 12:25AM

Access to klaviyo.com has been restored, and dependent services are progressively coming back online. Our team continues to work toward full recovery, which we expect within the next hour. We'll provide another update in 30 minutes.

INVESTIGATING 28 days ago - at 05/05/2026 11:40PM

We are continuing to investigate the issue affecting access to klaviyo.com and all associated services. Our engineering team is actively working to restore affected services. We will provide updates as soon as more information is available.

INVESTIGATING 29 days ago - at 05/05/2026 10:33PM

Our engineering team is continuing to investigate the disruption affecting klaviyo.com, our APIs, and message sending. We will provide updates as more information is available.

INVESTIGATING 29 days ago - at 05/05/2026 09:24PM

Klaviyo is currently experiencing a service disruption affecting access to klaviyo.com, our APIs, and message sending. Customers may be unable to log in, send campaigns or flows, or have their events processed during this time. Our engineering team is actively investigating the root cause. We'll provide updates as soon as more information is available.

source IsDown Service outage across platforms Reports started 10 minutes before official outage was reported

Users report website, API, and Klaviyo dashboard outages. Common error 522 indicates server's failure to complete requests, possibly due to resource overuse.

Latest Klaviyo outages

Page loading errors - 15 days ago
Processing delays - 26 days ago
API 503 Errors - about 1 month ago

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