# Klaviyo: Campaign sending delays

- Impact (vendor’s label): minor
- Status: resolved
- Started: 2026-06-08 21:10 UTC · Resolved: 2026-06-09 00:49 UTC · Duration: 3.6 h
- Updates: 5 · Affected components: SMS Sending - SMS Sending - Toll Free Number SMS, SMS Sending - SMS Sending - Short Code SMS, SMS Sending - SMS Sending - Toll Free Number MMS, SMS Sending - SMS Sending - Short Code MMS, Email Sending, Email Sending - Campaign Email Sending
- [Vendor status page: https://stspg.io/qg2qxt27yv9r](https://stspg.io/qg2qxt27yv9r)
- [Company: Klaviyo](https://rewindex.com/company/klaviyo.md)

## Timeline of updates

- **investigating** 2026-06-08 21:10 UTC: Some customers may be experiencing delays with campaign sending, where sends are currently stuck in processing. We are investigating the issue and will provide an update as soon as we have more information.
- **identified** 2026-06-08 21:19 UTC: We have identified the root cause and are working on a fix. We will share another update shortly.
- **identified** 2026-06-08 23:20 UTC: We are continuing to work through the fix for this issue. We are working to resolve this as quickly as possible and will share another update shortly.
- **monitoring** 2026-06-08 23:54 UTC: We have deployed a fix and campaign sending is recovering. We are processing the backlog of delayed campaigns and expect to deliver them shortly. We continue to monitor closely and appreciate your patience throughout this incident.
- **resolved** 2026-06-09 00:49 UTC: Campaign sending has been restored and the backlog of delayed campaigns has completed sending. This incident has been resolved.


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Canonical: https://rewindex.com/company/klaviyo/incidents/clb7hzrrcj97 · Markdown: https://rewindex.com/company/klaviyo/incidents/clb7hzrrcj97.md · JSON: https://rewindex.com/api/v1/companies/klaviyo/incidents/clb7hzrrcj97 · Generated 2026-10-18T10:41:22.540Z