This Product Features and Updates announcement for GPS Insight Pro and Enterprise includes updates for Alerts.
You can now opt to send a notification when a vehicle turns on or off with the Ignition Alert, available on the Alerts Manager page of the Portal (Accounts > Manage Alerts > Open).
Setting this alert for a large number of vehicles is not recommended.
One Time Alert Property Added
For select alerts, the option to send a notification once, then deactivate the alert is now available. To select this option, check the box next to One Time (see below) in the alert settings window.
See Adding an Alert for additional information.