This application appears to do pretty much what you're suggesting: https://play.google.com/store/apps/details?id=com.pingapp.app https://play.google.com/store/

This application appears to do pretty much what you're suggesting: https://play.google.com/store/apps/details?id=com.pingapp.app https://play.google.com/store/apps/details?id=com.pingapp.ap... Unfortunately, my colleagues insist upon using Skype instead of email, apart from the few I've persuaded to use Google hangouts instead.