Campaign Manager – Large Campaign Processing Delays

Update timeline

1. investigating Feb 26, 2026, 01:07 AM UTC

   We are currently investigating an issue affecting some large Campaign Manager sends, where campaigns may pause during processing and not progress as expected. A temporary workaround (pausing and resuming the campaign) is available while we investigate the root cause. Our technical team is actively working to identify and resolve the underlying issue. We will provide further updates as our investigation progresses. If you are experiencing related issues or require assistance, please contact us at [email protected].

2. monitoring Feb 27, 2026, 01:49 AM UTC

   We have identified the cause of the issue affecting some large Campaign Manager sends, where campaigns may pause during processing. Mitigation changes have been deployed to production to reduce the likelihood of campaigns becoming stuck. We are continuing to monitor the platform closely. If you experience any further issues, please contact us at [email protected].

3. monitoring Feb 27, 2026, 01:51 AM UTC

   We are continuing to monitor for any further issues.

4. resolved Mar 02, 2026, 11:05 PM UTC

   The issue affecting some large Campaign Manager sends has been mitigated. Changes have been deployed to production to reduce the likelihood of campaigns becoming stuck, and an automated monitoring process has been implemented to detect and safely resume stalled campaigns where required. We have not observed any new instances since the mitigation was applied and will continue to monitor performance. If you experience any further issues, please contact us at [email protected].