mail tests ok, no alert email when condition met

image is attached. mail tests ok. IP address for target is correct. please see image. What setting is wrong?

It is not alerting me when I pull the plug on this target computer.

send email is selected
each time conditions met selected
email is correct for sending "to"

The most typical cause for this problem is when the alert is not tied to the target being monitored. Have a look here for more information:

http://www.pingplotter.com/manual/standard/troubleshooting_alerts.html

If that's not it, please let us know.