# Resend: Microsoft 365 Incident

> Resend status incident “Microsoft 365 Incident” on 2026-11-12: impact minor (vendor’s label), 4 update(s). Archived by Rewindex.

Canonical: https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY
Last updated: 2026-11-13T00:53:00Z

- Impact (vendor’s label): minor
- Status: monitoring · edited after publishing
- Started: 2026-11-12 19:27 UTC · Resolved: not resolved · Duration: ongoing
- Updates: 4 · Affected components: Email Events
- [Vendor status page: https://resend-status.com/incidents/01M78KNBCKRWYD608GTR6J1AJY](https://resend-status.com/incidents/01M78KNBCKRWYD608GTR6J1AJY)
- [Company: Resend](https://rewindex.com/company/resend.md)

## Timeline of updates

- **monitoring** 2026-11-12 19:27 UTC: Microsoft 365 is currently experiencing an incident: https://status.cloud.microsoft/, 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.
- **monitoring** 2026-11-12 21:00 UTC: 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.
- **monitoring** 2026-11-12 22:58 UTC: Microsoft continues to work on restoring its services. We are monitoring delivery attempts there. Emails in “Delivery Delayed” status will continue to be retried.
- **monitoring** 2026-11-13 00:49 UTC: 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.

## Rewindex changes for this incident

- 2026-11-12 21:03 UTC: [Incident updated: Microsoft 365 Incident](https://rewindex.com/change/rfe5ba8b18f9f47.md)
- 2026-11-12 23:03 UTC: [Incident updated: Microsoft 365 Incident](https://rewindex.com/change/r2a673ccdc52c92.md)
- 2026-11-13 00:53 UTC: [Incident updated: Microsoft 365 Incident](https://rewindex.com/change/rd61eb62168e39b.md)

## 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.

- Canonical URL: https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY
- Citation: Resend, “Microsoft 365 Incident” (2026-11-12 19:27 UTC). Archived by Rewindex: https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY (CC BY 4.0).
- Markdown link: `[Resend: Microsoft 365 Incident (2026-11-12)](https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY)`


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Canonical: https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY · Markdown: https://rewindex.com/company/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY.md · JSON: https://rewindex.com/api/v1/companies/resend/incidents/01M78KNBCKRWYD608GTR6J1AJY · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-11-13T03:30:13.062Z