[US/EU] Elevated API Errors, Send Failures and Delayed Webhooks for Microsoft Grants

Microsoft API connectivity has returned to normal operating levels, and Nylas has confirmed that email and calendar synchronization and webhook processing have recovered across the US and EU regions.

The significant processing backlog accumulated during Microsoft's service disruption has been addressed, and remaining synchronization delays have decreased to near-normal levels.

We will continue monitoring Microsoft integrations for any residual issues.

Microsoft Status Page: https://status.cloud.microsoft/

Mitigated - Microsoft API connectivity has continued to improve, and Nylas API error rates and request throughput have returned to near-normal levels across the US and EU regions.

However, we are still processing a significant backlog of Microsoft email and calendar notifications accumulated during the disruption. Customers may continue to experience delays in email and calendar synchronization and associated webhook delivery while this backlog is cleared.

Our team is actively monitoring recovery progress and will provide further updates as the situation evolves.

Microsoft Status Page: https://status.cloud.microsoft/

We are seeing significant recovery in Microsoft's services, with Nylas API request success rates and throughput for Microsoft integrations returning to normal operating levels.

While Microsoft has not yet officially resolved its incident, our monitoring indicates that the impact on Nylas services has substantially subsided. We are continuing to monitor email and calendar synchronization, webhook delivery, and any remaining processing backlogs across the US and EU regions before considering this incident fully resolved.

Microsoft Status Page: https://status.cloud.microsoft/

Microsoft has acknowledged that they have an incident regarding their systems that Nylas uses to communicate for Microsoft grants.

At this time, Webhooks and Nylas API calls regarding Microsoft grants may not succeed or have significant delays. All other providers, including on-premise Exchange, are not affected.

Webhooks regarding Microsoft grants that are not triggering will fire correctly once communication to the Microsoft services has been restored.

We are continuing to track this incident to ensure our services will resume normal operation as soon as Microsoft has resolved their issues.

Microsoft status page: https://status.cloud.microsoft/

We are investigating a widespread issue affecting Microsoft grants in the US and EU regions. This appears to be caused by an issue on Microsoft's side, as requests to Microsoft Graph are failing or responding slowly, and we are receiving significantly fewer change notifications from Microsoft than usual.

Some customers may experience errors when sending messages, errors or slower responses on email, calendar, and contacts API requests, and webhook notifications for new or updated data arriving later than expected or not at all. Email, calendar, and contacts data may also take longer than usual to sync.

Google, IMAP, and other providers are not affected. We are monitoring the situation closely and will provide additional information as it becomes available.

More details here about the Microsoft outage:
https://status.cloud.microsoft/