Can Probes have parents?

Right now I have The Dude emailing me when a machine goes down. This is great, but I get 5-10 different emails for 1 machine. I don’t want to turn off the individual notifications, but if the machine is turned off by a user, I don’t need an email from every probe on that machine.

I know that devices have parents, and if I offload the probes to a child device, and keep only PING on the parent, that seems to work, but I was wondering if there was a better way.

you may create new notification, which run function or script, which is looking if machine is alive, and if alive, send email, if not - not send.
and assing this new notification to all your services, besides ping.