SMTP2GO experienced a 24.5-hour major incident affecting email delivery to Outlook and Gmail recipients, caused primarily by a Microsoft 365 outage impacting infrastructure across North America, Europe, and Japan. SMTP2GO adjusted its queuing system to reduce spillover impact on non-Microsoft domains while Microsoft progressively restored service across affected regions. The incident was fully resolved on November 13, 2026.
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This incident has been resolved.
From Microsoft:
Current status: We’re seeing encouraging recovery progress in Europe, with service availability and email delivery performance improving across a growing portion of affected Microsoft 365 infrastructure. Japan remains comparatively more stable, while North America is also improving; however, some users may still experience intermittent issues as recovery actions continue.
The outage at Microsoft continues and is not yet resolved. We have made adjustments to our queuing system to cater for increased load to reduce any impact on any non-Microsoft domains that are experiencing delays. We will continue to monitor the situation closely.
Outlook is currently experiencing an outage, which is impacting delivery for many customers. Please check out their status for more information:
https://x.com/MSFT365Status/status/2120941584220827979
https://www.techradar.com/news/live/outlook-outage-nov-2026
Gmail recipients are also experiencing delivery delays; we're continuing to investigate this issue.
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