Klaviyo: Delays affecting campaign scheduling, preview emails, and double opt-in confirmations
Klaviyo's status page listed this on 6 Aug 2026. Lasted 1.1 h, filed against Email Sending, Profiles and Campaign Editor. This is their record, not a measurement of ours.
What happened
Started
Resolved
Lasted1.1 h
What failedEmail Sending, Profiles and Campaign Editor
Their impactMinor
Regions: their page does not say which. Ours checks from three cities, and the screen we saw is on our own incident pages, where there is one.
What Klaviyo said
On their page: Delays affecting campaign scheduling, preview emails, and double opt-in confirmations
Klaviyo's status page: “Beginning around 12:00 PM US/Eastern on August 5, 2026, we began investigating an issue affecting some email subscription and campaign features. Customers using double opt-in may find that new subscribers are not receiving confirmation emails as expected. Some users may encounter errors when sending preview emails, scheduling campaigns, or checking estimated recipient counts. Our team is working to resolve this. We will share another update as soon as we have more information.”Investigating
Klaviyo's status page: “We have identified the source of the issue affecting some email subscription and campaign features. Customers may continue to see errors when sending preview emails and customers using double opt-in may find that new subscribers are not receiving confirmation emails. Campaign scheduling has recovered and is working as expected. We are working to resolve this as quickly as possible and will share another update shortly.”Identified
Klaviyo's status page: “A fix has been deployed and the affected email subscription and campaign features have recovered. Double opt-in confirmation emails are sending again, and preview emails and estimated recipient counts are working as expected. We continue to monitor closely and appreciate your patience throughout this incident.”Monitoring
Klaviyo's status page: “The email subscription and campaign features affected by this incident remain stable and are operating normally. Double opt-in confirmation emails, preview emails, and estimated recipient counts have returned to normal operation. Confirmation emails that failed to send during the incident are being resent. This incident has been resolved.”Resolved
What our own check saw
Nothing of ours failed that day, or we were not checking Klaviyo yet.
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