Outage report · Partial outage
Klaviyo outage on Oct 29, 2026
Campaign Sending Delays
What happened
Klaviyo reported a partial outage starting Oct 29, 2026, 14:55 UTC, affecting Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending. It was marked resolved at Oct 29, 2026, 17:05 UTC.
- The incident lasted 2h 10m from first report to resolution.
- Klaviyo had reported 4 other partial or major outages in the 90 days before it.
- 7 other vendors we track reported a significant incident within 12 hours of it.
Latest update from Klaviyo
Campaign sending has returned to normal, and all affected campaigns have been repaired and sent. Between approximately 7:59 AM and 11:45 AM US/Eastern on October 29, 2026, some customers experienced delays sending campaigns, and some scheduled campaigns may have appeared stuck or shown no recipients while they processed. We're sorry for the disruption this caused. This incident has been resolved.
What our independent monitoring saw
Our independent monitoring of Klaviyo started after this incident, so this report is based on Klaviyo's status page.
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 62.2/100, with 99.26% effective uptime and 13 incidents over the last 90 days.
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