Source : https://medium.com/@cketti/android-sending-email-using-intents-3da63662c58f#.ug8c5jq9s
Thanks to https://medium.com/@cketti
Many things on Android are as easy as starting an Activity using the right Intent. Sending an email to a specific recipient is one of those things.
Sadly, there is much bad advice out there on how to send emails using Intents. Because I write an open source email app I have a pretty good understanding of what goes on behind the scenes. That’s why I believe I know better than all those other people