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Suggested Office 365 Settings

The following settings are recommended by Nylas to help ensure maximum compatibility with our sync engine.

To start, open your Exchange admin center from the Office 365 settings page.



  • Make sure the default sharing policy is set for individual calendar sharing.
Office 365 Sharing Settings


Malware Filter

  • Make sure sender notifications are enabled (notify internal and external senders)
  • Make sure Malware Detection response is set to Delete all attachments
Office 365 Malware Settings

Connection Filter

  • Use default settings
Office 365 Connection Settings


Device Access Rules

  • Make sure all iPhone devices are allowed
  • Make sure there are no quarantined devices with a user agent string of python-EAS-Client 1.0 (the fake mobile device Nylas uses to connect)
Office 365 Mobile Settings

Mobile Device Mailbox Policies

  • Make sure the default settings are being used.