This is the most common action. A message notifies the operator that an event has occurred, can supply the operator with instructions for responding to the event and can provide a link to a command that the operator can run. You can also configure messages acknowledge or suppress duplicates.
You may want to send a message to the management server for tracking reasons, but don't need to have the user take any action or acknowledge the message. In this case, you can send the message directly to the acknowledged messages browser.
Certain events could represent conditions that can always be helped by running a certain command. If you know that a command should always be run in response to an event, you can configure an automatic command.
In some circumstances, you may want a rule to stop the policy from evaluating the event (to improve performance) without providing the operator with any notification.