On the title bar of the portal site, click Site Settings.
In the General Settings section, click Manage alerts settings.
In the User Alerts Management section, click Manage user profiles to go to a page where you can delete or deactivate an individual user's alerts.
In the Delete All Alerts and Alert Results
section, click Delete all alerts and alert results to remove all alerts and alert results stored in the portal site for all users.
Click OK to confirm that you want to delete all alerts and alert results for all users.
Important This action cannot be undone.
In the Delete All Alert Results E-mail Messages
section, click Delete all alert results e-mail Messages to remove all alert results e-mail messages waiting to be sent in the alerts notification queue.
Click OK to confirm that you want to delete all unsent alert results in the queue.
