Resolved after 3 hours 5 minutes, affecting Optimail, on December 28, 2025.
OptiMail metrics processing has been restored for EU and US tenants. Metrics for the last ~24 hours are recovering and updating as expected. We are continuing work to reconcile the remaining missing/delayed metrics from the incident window.
Affected components
Update timeline
- investigating Dec 28, 2025, 08:59 AM UTC
We are investigating an issue causing OptiMail metrics to be missing or not updating for some customers in both EU and US regions, starting Dec 26, 2025 14:02 UTC. This may impact Mission Control / OptiMail reporting visibility (e.g., recent campaign performance metrics). We are working to restore normal metrics processing and will provide updates as we learn more
- monitoring Dec 28, 2025, 10:17 AM UTC
A mitigation has been applied and OptiMail metrics processing has been restored for EU & US tenants. Some customers may still see missing or delayed metrics for the period while we assess recovery/backfill options and continue monitoring system stability
- resolved Dec 28, 2025, 12:05 PM UTC
OptiMail metrics processing has been restored for EU and US tenants. Metrics for the last ~24 hours are recovering and updating as expected. We are continuing work to reconcile the remaining missing/delayed metrics from the incident window.
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