Assigning an Alert to a Module Go the agent editing, where the module is defined and click on the alert tab: Now add the module ( Host Alive ), the template ( Critical Condition ) and the action ( Mail to admin ). Click Add alert . Once added, you may see in the agent view whether it is running or not, by taking a look at is state color: When the host goes offline the alert will fire: An email should be received, something similar to this one: Pandora FMS alerts are extremely flexible and, therefore sometimes complex to use. There is a specific chapter for those in the documentation:  Alerts in Pandora FMS .