Adding "exit intent" activation of the pop-up?

Hi, I just found this plugin: http://optinmonster.com/ that seems genius because it focuses on "exit intent", which is a lot less annoying if a site prompts you to follow it, as you're leaving, rather than when you first come on, or after a certain amount of time. WP Beginner used it to increase their email list signups by a lot: http://www.wpbeginner.com/wp-tutorials/increased-email-subscribers-600-optinmonster/

Could that kind of functionality be added to this plugin? It would make it a whole lot more useful, in my book.