Klaviyo incident

Event-triggered flow delays

Resolved after 15 minutes, affecting Email Sending, on September 16, 2025.

monitoring Sep 16, 2025, 09:17 PM UTC

A fix has been deployed and system performance is improving. We continue to monitor closely and appreciate your patience throughout this incident.

Started
Sep 16, 2025, 09:05 PM UTC
Resolved
Sep 16, 2025, 09:21 PM UTC
Duration
15m
Detected by Pingoru
Sep 16, 2025, 09:05 PM UTC

Affected components

Email Sending

Update timeline

  1. identified Sep 16, 2025, 09:05 PM UTC

    Starting 3:50pm US/Eastern on 9/16/25, we began observing delays in event-triggered flows. Users may see delays of up to 60 minutes. We're currently working on a fix. We’ll provide updates as soon as more information is available.

  2. monitoring Sep 16, 2025, 09:17 PM UTC

    A fix has been deployed and system performance is improving. We continue to monitor closely and appreciate your patience throughout this incident.

  3. resolved Sep 16, 2025, 09:21 PM UTC

    This incident has been resolved.

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