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CompaniesResendIncidents

Resend: Microsoft 365 Incident

MinorStatus: monitoringeditedStarted Not resolved4 updatesresend-status.com (opens in new tab)

Affected components: Email Events

Timeline of updates

  1. monitoring

    Microsoft 365 is currently experiencing an incident: https://status.cloud.microsoft/ (opens in new tab), which is degrading its ability to accept email. While this is not a Resend incident, it is possible to see an elevated amount of “Delivery Delay” events if Microsoft is unable to accept the email.

    With our Delivery Delayed events, we will retry delivery. Once Microsoft resolves its incident, sending to these addresses will return to normal.

  2. monitoring

    We’re continuing to monitor delivery to Microsoft-hosted inboxes as they work to resolve the incident.

    Emails in a “Delivery Delayed” status will continue to be retried and delivered once Microsoft resolves the incident.

  3. monitoring

    Microsoft continues to work on restoring its services.

    We are monitoring delivery attempts there. Emails in “Delivery Delayed” status will continue to be retried.

  4. monitoring

    Microsoft is still working to resolve the incident affecting email delivery to Microsoft 365. Emails to Microsoft-hosted addresses may continue to show a “Delivery Delayed” status. There’s no need to retry them: we’re retrying automatically, and they’ll be delivered once Microsoft is accepting mail again.

    We’ll post another update as Microsoft’s status changes.

Changes Rewindex caught on this incident

Archive proof

Rewindex commits each version of an incident it captures to a daily checkpoint, chains it to the day before, and has the checkpoint timestamped by FreeTSA and DigiCert. That proves these records existed by then and have not been changed since, by anyone, Rewindex included.

How the archive is checked, and what it cannot prove.

Rewindex captured a newer version after the last checkpoint; the next run () commits it.

Impact, status and times are the vendor’s own, as last archived. View on resend-status.com (opens in new tab).

Cite this

Status incident (vendor impact label: minor) posted by Resend, started 2026-11-12 19:27 UTC, not resolved, 4 update(s); edited after publishing.

Title
Microsoft 365 Incident
Vendor
Resend
Date
URL
https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY

Resend profileRecent Resend incidentsAll outages on November 12, 2026Resend in November 2026MarkdownJSON