Emails to Outlook and Office365 inboxes are experiencing delays

Incident Report for beehiiv

Identified

Due to technical issues at Microsoft we are currently seeing much higher deferral rates and delayed delivery to Outlook, Office365 and other Microsoft hosted inboxes. No mail has been lost but delivery may be delayed for subscribers with Microsoft hosted inboxes.

https://variety.com/2026/digital/news/outlook-outage-microsoft-email-down-1236946411/
https://status.twilio.com/incidents/7h6p6ss3xrnm
Posted Nov 12, 2026 - 16:51 EST
This incident affects: Sending emails.