Changes / Klaviyo / Issues with Campaign Sending and Scheduling
Klaviyo: Major incident: Issues with Campaign Sending and Scheduling
Summary
Summary pending. The diff below shows exactly what changed.
What changed
Before: not present
After: Issues with Campaign Sending and Scheduling
Before: not present
After: major
Before: not present
After: resolved
Before: not present
After: 2026-01-12 11:12 UTC
Before: not present
After: 2026-01-12 12:23 UTC
Before: not present
After: Email Sending, Email Sending - Campaign Email Sending, Mobile Push Sending, SMS Sending - SMS Sending - Other, Text Message Sending
Before: not present
After: Beginning around 5am US Eastern time, we began observing delays in campaign scheduling and sending. New campaigns, and scheduled RAST (calculate Recipient at Send Times) campaigns, are unable to send. However non-RAST campaigns that were scheduled prior to 5am US Eastern Time are processing as usual.
We do not expect data loss. We are actively working to resolve the incident and will provide updates as soon as possible.
Before: not present
After: As of 6:45am US Eastern, the issue has been identified and a fix implemented. Any new scheduled or sent campaigns should process, with slight delays. We are actively replaying any campaigns that were delayed.
Before: not present
After: A fix has been implemented and we are monitoring results. Campaign sending and scheduling is back to normal, and all delayed campaigns have been replayed.
Before: not present
After: This incident has been resolved.
First version of this incident archived by Rewindex. View the live incident.
History of this incident
| When (UTC) | Change | Kind |
|---|---|---|
| Major incident: Issues with Campaign Sending and Scheduling (this change) | Major incident |