Google Hangouts

Google hangouts seems like an application that centralizes most of your communication.  It is available on Apple, Android, PC, and all google devices.  It allows group conversations, photo communication, text communication, email communication, and video communication.  Google hangouts also allows you to draw and send attached files as well.  You can use it through gmail, google plus, and the google hangouts app itself.  It essentially it's just synchronizing all your google based communication and integrating a few outside options.  More information on how to set up and use the google hangouts account can be found here