Nylas Authenticaiton Issue - 500 Error and Email/Calendar Sync Failures

A fix has been implemented as of approximately 12:15pm PST/PDT on 7/8/2026. Email and Calendar sync are now fully functional for Lever instances configured with Nylas authentication.

We are continuing to monitor the effectiveness of the fix. A Root Cause Analysis (RCA) will be published to this issue within the standard Service Level Agreement.

On 7-3-2026 we were made aware of an issue impacting Lever instances with Nylas authentication (generally used for customers with on-premise Microsoft Exchange email/calendar services). Only Nylas authentication is impacted, there has been no similar behavior observed for customers authenticating with Office 365 or Google services.

Users may experience a "500 error" message when attempting to reset email/calendar permissions and we have observed several unexpected email loops causing candida...