Klaviyo: Flow sending delays
Klaviyo's status page listed this on 18 Sept 2026. Lasted 2.6 h, filed against Email Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending and Processing. This is their record, not a measurement of ours.
What happened
Started
Resolved
Lasted2.6 h
What failedEmail Sending, Text Message Sending, WhatsApp Sending, Mobile Push Sending and Processing
Their impactMinor
Regions: their page does not say which. Ours checks from three cities, and the screen we saw is on our own incident pages, where there is one.
What Klaviyo said
On their page: Flow sending delays
Klaviyo's status page: “We have identified the cause of the delays affecting flow message sending and are working on a fix. Some customers may continue to see flow messages send later than expected while we resolve this. We will share another update shortly.”Identified
Klaviyo's status page: “We are seeing early signs of improvement and continue to work towards full recovery. Customers may still see flow messages send later than expected. We will share another update shortly.”Identified
Klaviyo's status page: “Flow message sending is recovering, and delays are continuing to clear. Some customers may still see flow messages send later than expected as remaining processing catches up. We continue to monitor closely and appreciate your patience throughout this incident.”Monitoring
Klaviyo's status page: “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.”Resolved
What our own check saw
Nothing of ours failed that day, or we were not checking Klaviyo yet.
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