Klaviyo experienced a major incident on October 1, 2025 affecting Unsubscribe & Preference Pages, lasting 15m. The incident has been resolved; the full update timeline is below.
Affected components
Unsubscribe & Preference Pages
Update timeline
- monitoring Oct 01, 2025, 02:16 AM UTC
We are currently monitoring an issue that was impacting subscribe and unsubscribe pages for all profiles. This may have prevented profiles from opting in or out of marketing communications. We'll provide updates as soon as more information is available.
- resolved Oct 01, 2025, 02:31 AM UTC
This incident has been resolved.