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Outage in Thread

OTP Passwords not being sent

Resolved Major
January 22, 2026 - Started 23 days ago - Lasted about 19 hours
Official incident page

Incident Report

We are currently experiencing an issue where emails sent from our environment to recipients hosted on Microsoft 365 (including Outlook.com and Exchange Online) are being delayed or not received. If you use SSO for sign in you should be unaffected.
Components affected
Thread Inbox, Messenger, & Admin

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Latest Updates ( sorted recent to last )
RESOLVED 22 days ago - at 01/23/2026 03:19PM

This incident has been resolved.

INVESTIGATING 23 days ago - at 01/22/2026 09:10PM

You can monitor the outage here https://status.cloud.microsoft/m365/referrer=serviceStatusRedirect.

INVESTIGATING 23 days ago - at 01/22/2026 08:59PM

We have verified email addresses not hosted by Microsoft are unaffected and are able to sign in as usual

INVESTIGATING 23 days ago - at 01/22/2026 08:47PM

We are continuing to investigate this issue.

INVESTIGATING 23 days ago - at 01/22/2026 08:46PM

We are currently experiencing an issue where emails sent from our environment to recipients hosted on Microsoft 365 (including Outlook.com and Exchange Online) are being delayed or not received. If you use SSO for sign in you should be unaffected.

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