Enabling email notifications from Box
Box uses an email service provider to deliver notification messages, such as invitations to collaborate on content when a file has been shared. To ensure your organization can receive notifications from Box, you may need to update your filters to allow email notifications to reach your users. This means you must whitelist the the Box email servers that send notification emails.
If your organization uses email filtering, you must whitelist the following servers (but these addresses can change without notice if your organization requires IP addresses for email filtering):
Testing email delivery
After you whitelist Box email servers, use the Admin Console to test whether Box email notifications are getting through. To do this, from the Admin Console, navigate to Enterprise Settings > Notifications tab. From there you can use the Email Test section to send a test notification.