Klaviyo: Delays in event-based flow processing
Affected components: Email SendingEmail Sending - Flow Email Sending
Timeline of updates
- investigating
We are currently investigating delays in the triggering of event-based flows, which began around 08/12/2025 at 11:45 US/Eastern.
Our team is actively working to resolve the issue. Further updates will be provided as soon as new information is available.
- monitoring
Triggering of event-based flows is now back to real-time. We're continuing to monitor and will provide an additional confirmation of full recovery.
- resolved
This is now resolved, triggering is back to real-time.
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 2026-10-17 checkpoint, timestamped by FreeTSA and DigiCert on . Record hash
a73b9b101717c8fd…
Impact, status and times are the vendor’s own, as last archived. View on stspg.io (opens in new tab).
Cite this
Status incident (vendor impact label: minor) posted by Klaviyo, started 2025-08-12 16:39 UTC, resolved after 34 min, 3 update(s).
- Title
- Delays in event-based flow processing
- Vendor
- Klaviyo
- Date
- URL
- https://rewindex.com/company/klaviyo/incidents/jxh78j8zgrhc
Klaviyo profileRecent Klaviyo incidentsAll outages on August 12, 2025Klaviyo in August 2025MarkdownJSON