auto notify email if a request does not have an update for X time frame?

auto notify email if a request does not have an update for X time frame?

Is there a way to set this up, so that old tickets with no activity can email out their status, so that a technician can either close them or address accordingly? 

If there isnt anything in the application that can do it, is there anything we can setup on the server box itself, to check a database value, or whatever would represent that a request has been dormant for a certain time frame? 

the pseudo code might be something like this. 

If "value" is > 3 days, then email $technician or $supportGroup request details.

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