Klaviyo had a major outage on October 8, 2026 that lasted about 1 hour 6 minutes. StatusBird's own monitoring recorded the first non-operational reading at 15:02 UTC and the first clear reading at 16:08 UTC, a measured window of 66 minutes.
StatusBird checks Klaviyo every 2 minutes from its own infrastructure, so the timeline below is what an independent observer saw rather than what the vendor's status page said afterwards. Every figure on this page comes from those readings.
When did Klaviyo go down and when did it recover?
| Event | Observation |
|---|---|
| First non-operational reading | 15:02 UTC, October 8, 2026 |
| Worst status observed | major |
| Recovery observed | 16:08 UTC, October 8, 2026 |
| Duration | 66 minutes |
| Non-operational readings | 33 |
Across the window StatusBird recorded 33 non-operational readings (33 major). Readings are taken every 2 minutes, so the true start and end may sit up to 2 minutes either side of the times above. All times are UTC.
How unusual is this for Klaviyo?
In the last 90 days StatusBird recorded 1 major or critical Klaviyo incidents, 62 minutes of combined downtime, and 99.95% availability. That makes this incident longer than the 62 minute average for Klaviyo over the same period.
This was the only major or critical Klaviyo incident StatusBird recorded in the last 90 days, so there is no prior window to compare the shape of it against. The running record is on the Klaviyo reliability page.
What does a Klaviyo outage affect?
For online stores using Klaviyo, email and SMS campaigns, automation flows, and signup forms stop sending or firing. The size of the loss depends on when the window landed: 66 minutes across a weekday peak is a different number from the same window overnight, which is why the start time above matters more than the duration alone.
What should a store do when Klaviyo goes down?
The response that matters happens in the first few minutes, before the vendor has posted anything on its own status page. In order:
- Pause scheduled campaigns and flows so they do not fire into a broken queue and send twice on recovery.
- Check whether signup forms are failing silently on your storefront. A form that swallows the error loses the subscriber outright.
- Note the window so you can explain the gap in the next report, since open and click data for the period will be incomplete.
- Once service resumes, reschedule rather than resume, and confirm the send count before releasing the campaign.
- Confirm the problem is the vendor and not your own integration, by checking whether the failure affects every request or only yours.
- Tell your support team what is happening and what to say, before the tickets arrive rather than after.
- Pause any automated job that retries against the failing service, so a backlog does not fire twice on recovery.
- Write down the start time. Most vendor SLA credit claims require the window, and reconstructing it later from memory rarely works.
The longer version, with the checks specific to this service, is in what to do when Klaviyo goes down.
Knowing before your customers do
StatusBird detected this incident automatically and alerted affected store owners by SMS, email, and Slack within minutes of the first non-operational reading. It monitors Klaviyo alongside the other third-party services online stores depend on, and paid plans watch your own storefront as well. Start monitoring free.
Frequently asked questions
How long was the Klaviyo outage on October 8, 2026?
About 1 hour 6 minutes. StatusBird observed the first non-operational reading at 15:02 UTC and the first clear reading at 16:08 UTC, for a measured window of 66 minutes.
How bad did it get?
The worst status observed during the window was major. StatusBird normalizes every vendor status page onto the same four levels, operational, degraded, major and critical, so that severity means the same thing across services.
How often does Klaviyo go down?
In the last 90 days StatusBird recorded 1 major or critical Klaviyo incidents and 99.95% availability, with the average incident running 62 minutes. The current figure is always on the Klaviyo reliability page.
Was my store affected?
If your store calls Klaviyo during checkout or fulfillment, requests made between 15:02 UTC and 16:08 UTC on October 8, 2026 are the ones to check. Orders created in that window without a matching downstream record are the usual casualty.
Where does this data come from?
StatusBird checks Klaviyo every 2 minutes from its own infrastructure and records each reading. These figures are those readings, not a restatement of the vendor's own incident report. The method is documented at statusbird.io/methodology, and live status is at statusbird.io/status/klaviyo.