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Email notifications delayed for Microsoft-hosted recipients

Minor Impact Resolved Duration: 2h 41m September 4, 2026
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Current answer

Envoy experienced a minor incident: Email notifications delayed for Microsoft-hosted recipients. ServiceAlert observed recovery on Sep 4, 2026.

Official Envoy status page Current Envoy status ServiceAlert observed status change:

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Incident Lifecycle

Investigating Investigating Identified Monitoring
Affected Components
Email notifications

Incident Timeline

Monitoring
Our third-party email delivery provider is reporting recovery in delivery to Microsoft-hosted mail services. We are actively monitoring delivery and will confirm once we have verified that messages are flowing normally.
Sep 4, 2026 at 2:06 PM UTC
Identified
We have identified the cause as an issue with our third-party email delivery provider, whose messages to Microsoft-hosted mail services are currently being throttled. This affects Envoy emails sent to recipients on Microsoft services such as Microsoft 365 and Outlook — including sign-in verification, invite, and visitor notification emails.

Affected messages are queued and retried automatically rather than lost, and should arrive once normal delivery is restored. As per our investigation,...
Sep 4, 2026 at 12:17 PM UTC
Investigating
We are continuing to investigate this issue.
Sep 4, 2026 at 12:14 PM UTC
Investigating
We are currently investigating this issue.
Sep 4, 2026 at 12:13 PM UTC
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