Klaviyo outage, 21 September 2026

Flow sending delays

Started
Resolved
21 Sept 2026, 17:58 UTC (after 2 h 2 min)
Impact
Minor
Affected
Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending, Processing

Last update from Klaviyo

Flow message sending has fully recovered and is processing at normal speeds. Delayed messages were not lost and have since been delivered. This incident has been resolved.

21 Sept 2026, 17:58 UTC

Read the full incident on the official Klaviyo status page

Is Klaviyo down now?

This page is the record of one past incident. For the live status, see Is Klaviyo down right now? - it reads the official status page every 2 minutes.

Other Klaviyo incidents

  1. Analytics Events Processing Delays

  2. Login and page loading issues

  3. Flow sending delays

  4. Sending delays for event-triggered flows

  5. Issue with Time Delays in Flows

  6. Delays in real-time segmentation

  7. Campaign scheduling errors

  8. Delays affecting campaign scheduling, preview emails, and double opt-in confirmations

All recorded Klaviyo incidents