There are many third-party libraries for Android but several of them are “must have” libraries that are extremely popular and are often used in almost any Android project. Each has different purposes but all of them make life as a developer much more pleasant. The major libraries are listed below in a few categories.
I found best article for Android Studio Tips and Tricks
Read from here : http://michaelevans.org/blog/2016/01/06/android-studio-tips-and-tricks/
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