Modal dialogs are designed to bring important pieces of information to users from any page without changing an active routing state. It is often convenient to utilize a modal dialog that itself contains a number of views and its own routing. And, since the $ionicModal service does not provide this functionality, here is where custom modal implementations come into play.
Custom URL scheme PhoneGap Plugin is a cool plugin for Cordova that is designed to allow to launch apps by clicking on a link in an email or on a web page. Bellow is an example of how this plugin can be used for the Ionic application.