Customer.io: Delays in message sending
Affected components: Message Sending
Timeline of updates
- investigating
Our team is currently investigating an issue delaying message sending in the US and EU regions
- monitoring
A fix has been implemented and we're monitoring the results.
- resolved
This incident has been resolved.
Changes Rewindex caught on this incident
Archive proof
Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves this record existed by then and has not been changed since, by anyone, Rewindex included.
How the archive is checked, and what it cannot prove.
First version captured
In the 2026-10-22 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
88e9d2bf9af4c8a2…
Impact, status and times are the vendor’s own, as last archived. View on status.customerio.com (opens in new tab).
Cite this
Status incident (vendor impact label: major) posted by Customer.io, started 2026-07-20 17:47 UTC, resolved after 0 min, 3 update(s).
- Title
- Delays in message sending
- Vendor
- Customer.io
- Date
- URL
- https://rewindex.com/company/customer-io/incidents/5cgqc0yvj9rq
Customer.io profileRecent Customer.io incidentsAll outages on July 20, 2026Customer.io in July 2026MarkdownJSON