[US] Elevated 500 Errors for Messages API Requests on IMAP Grants

Incident Report for Nylas v3

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.
Posted Aug 06, 2026 - 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.
Posted Aug 06, 2026 - 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.
Posted Aug 06, 2026 - 07:37 PDT
This incident affected: Nylas Application Services (API v3) and 3rd Party Providers (Yahoo!, iCloud, Other Email Server Hosting Providers).