[US/EU] Elevated Errors for Attachments API Requests on Microsoft Exchange (EWS) Grants
Update - Error rates have returned to normal levels for /attachment API requests affecting Microsoft Exchange (EWS) grants in both the US and EU regions.

We are continuing to monitor performance to confirm the issue remains fully resolved.
Aug 14, 2026 - 08:02 PDT
Monitoring - Mitigated - We have implemented changes to address the elevated error rates affecting /attachment API requests for Microsoft Exchange (EWS) grants and are seeing recovery.

We are continuing to monitor performance to confirm full recovery across both the US and EU regions.
Aug 14, 2026 - 07:39 PDT
Investigating - We are experiencing elevated error rates for the /attachment API endpoint affecting EWS grants for on-premises and hosted Microsoft Exchange providers in both the US and EU regions. Other grant types, including Microsoft Graph, Google, and IMAP, are not affected.
Aug 14, 2026 - 07:15 PDT

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Aug 14, 2026

Unresolved incident: [US/EU] Elevated Errors for Attachments API Requests on Microsoft Exchange (EWS) Grants.

Aug 13, 2026

No incidents reported.

Aug 12, 2026

No incidents reported.

Aug 11, 2026

[US] Higher Latency for New and Updated Messages
Resolved - Sync latencies for new and updated messages in the US region have remained at normal operating levels, and our systems are stable.

The changes implemented during the incident have mitigated the impact of the unusually high notification traffic. We will continue to monitor and address that traffic as part of our normal operations, but it is no longer affecting broader message synchronization performance.

The EU region was not affected. This incident is now resolved. Thank you for your patience while we worked to address this issue.
Aug 11, 15:16 PDT
Update - Mitigated - Sync latencies for new and updated messages in the US region have returned to normal operating levels following the infrastructure changes implemented earlier.

We have mitigated the customer impact and are continuing to monitor performance while we investigate the unusually high notification traffic that contributed to the incident.

The EU region remains unaffected.
Aug 11, 13:12 PDT
Monitoring - We have observed a large increase in notification traffic from Microsoft Graph today, which resulted in higher latencies for new and updated messages across providers in the US region.

We have made changes to our infrastructure to better handle the increased traffic, and latencies have reduced. We are continuing to monitor performance and investigate the source of the unusually high notification traffic.

The EU region is not affected.
Aug 11, 12:53 PDT

Aug 10, 2026

No incidents reported.

Aug 9, 2026

No incidents reported.

Aug 8, 2026

No incidents reported.

Aug 7, 2026

No incidents reported.

Aug 6, 2026

[US] Elevated 500 Errors for Messages API Requests on IMAP Grants
Resolved - Error rates and request latency for the /messages API endpoint have remained at normal operating levels, and our monitoring confirms that the issue is no longer affecting customers.

This incident is now resolved. Thank you for your patience while we worked to address it. If you require additional assistance, please contact support@nylas.com.
Aug 6, 11:30 PDT
Monitoring - Error rates and request latency for the /messages API endpoint have returned to normal operating levels. We will continue to monitor performance to confirm the mitigation remains effective.
Aug 6, 09:36 PDT
Investigating - We are investigating elevated rates of HTTP 500 responses for the /messages API endpoint affecting IMAP grants in the US region. Some requests may fail as a result.

The issue is not affecting grants for other providers, other API endpoints, or the EU region. The overall error rate remains low. We will provide another update as our investigation progresses.
Aug 6, 07:37 PDT

Aug 5, 2026

Update to Nylas' Subprocessors page
Completed - This message serves as notification that the following updates have been made to the Nylas Subprocessors page.

The following subprocessor is being added: PostHog

You can find the details regarding what data is being processed by each subprocessor, as well as the applicable components, locations, and entities on the Nylas Subprocessor page at https://www.nylas.com/security/subprocessors/

If you have any questions or concerns about the new subprocessor additions or removals, please contact our Security Team at security@nylas.com.
Aug 5, 13:25 PDT
Scheduled - This message serves as notification that we are making changes to Nylas' Subprocessors page today
Aug 5, 13:25 PDT

Aug 4, 2026

No incidents reported.

Aug 3, 2026

No incidents reported.

Aug 2, 2026

No incidents reported.

Aug 1, 2026

No incidents reported.

Jul 31, 2026

No incidents reported.

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