- Level
- confirmed
- Worst impact
- Partial outage
- Components
- Management Interface
- Down Index
- 40of 100
Summary
Customer.io says customers were unable to add new email sending domains. The provider identified the issue, and the incident is now resolved as of 2026-11-07 00:24 UTC.
Written by anthropic/claude-haiku-5.5 from Customer.io's own updates.
What to do
Check whether you use Customer.io Management Interface. 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 31m it lasted.
Anything that failed between 2026-11-06 23:53 UTC and 2026-11-07 00:24 UTC may need a replay.Subscribe to Customer.io's feed to hear about the next one first. RSS feed
https://down.guide/feed?provider=customerio works in Slack (/feed subscribe), Discord feed bots and any RSS reader.
Updates from Customer.io 3
- investigating
We are currently investigating this issue.
provider
- identified
We have identified the issue and are working to resolve the matter.
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-95c4206922
Is Customer.io still down?
No, this incident was resolved 2026-11-07 00:24 UTC. For Customer.io's live state, see https://down.guide/providers/customerio.
How long did it last?
31m, from 2026-11-06 23:53 UTC to 2026-11-07 00:24 UTC, by the times Customer.io posted.
What was affected?
Customer.io named Management Interface.
What caused it?
Customer.io hasn't published a root cause. If it does, it shows here.
Where does this come from?
Customer.io's official status page, https://status.customerio.com, quoted verbatim. down.guide's own probes, reports and social counts are labeled as ours.