Administrators can enable a warning reminding all users about preferred email addresses for notifications. When enabled, the next time users at that institution visit the Notification Preferences page, they will see a popup alerting them that adding a non-institution based email address may result in the exposure of sensitive content.
In Global Navigation, click the Admin link , then click the name of the account .
Select Display Warning
Select the Display one time pop-up warning on Notification Preferences page checkbox.