Default [Q] Is there an app for that?

Hi all,

I bought 2 IP cameras for my parents as a sort of burglary alarm.
The camera's are connected to the WIFI network and can send e-mails when motion is detected. This works very well and suits their needs.

I set up a Gmail account just for the camera's. I added the new Gmail account to the gmail app of my parents and set a different notification sound to it so they can hear immediatly that a mail came in from the cameras. But, sometimes they miss it when they don't pay attention to their phones.

What I'm looking for is an app that is triggered when a certain mail comes in, or on a certain account and sets off some loud sounding alarm or something like that.

Anyone an idea???