- Level
- confirmed
- Worst impact
- Degraded
- Components
- Email Sending
- Regions
- us
- Down Index
- 18of 100
What to do
Check whether you use Klaviyo Email Sending in us. Check your stack
Paste a package.json, lockfile, Terraform or a list of domains at down.guide/stack to see every provider you depend on.Confirm your retries, queues and scheduled jobs caught up after the 16m it lasted.
Anything that failed between 2025-09-16 21:05 UTC and 2025-09-16 21:21 UTC may need a replay.Subscribe to Klaviyo's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=klaviyo works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Klaviyo 3
- identified
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.
provider
- monitoring
A fix has been deployed and system performance is improving. We continue to monitor closely and appreciate your patience throughout this incident.
provider
- resolved
This incident has been resolved.
provider
Reports count in aggregate; nothing about you is shown.
Corrections
None so far.
Something wrong on this page? Report an error or send us a note. Every fix is listed here.
Questions about DWN-ffca675541
Is Klaviyo still down?
No, this incident was resolved 2025-09-16 21:21 UTC. For Klaviyo's live state, see https://down.guide/klaviyo.
How long did it last?
16m, from 2025-09-16 21:05 UTC to 2025-09-16 21:21 UTC, by the times Klaviyo posted.
What was affected?
Klaviyo named Email Sending in us.
What caused it?
Klaviyo hasn't published a root cause. If it does, it shows here.
Where does this come from?
Klaviyo's official status page, https://status.klaviyo.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.