Changes / Klaviyo / Flow Sending Delays
Klaviyo: Incident updated: Flow Sending Delays
Summary
Summary pending. The diff below shows exactly what changed.
What changed
Before: monitoring
After: resolved
Before: not present
After: 2026-10-17 21:51 UTC
Before: not present
After: Flow processing has returned to normal, and delayed flow actions - including email, SMS, and push messages, as well as profile and list updates - have fully caught up. Immediate sends were not affected. We apologize for the disruption this caused. This incident has been resolved.
Compared with the previous archived version of this incident (10-minute polling). View the live incident.
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Incident updated: Flow Sending Delays (this change) | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Incident updated: Flow Sending Delays | Incident update | |
| Major incident: Flow Sending Delays Klaviyo reported a major degradation in flow message sending starting 2026-10-17 17:01 UTC, with some customers’ flow emails delayed; immediate sends remained unaffected. The incident was still open when archived, after 1 h 4 min at the last update. Klaviyo said it had identified the cause and was working on a fix, without specifying either. | Major incident |