This is one of the best mailing apps. Every person must have it on their mobile phones.
It is the most popular application.
Best features of this app are
•you can use two accounts in one Application window.
•Gmails are easy to handle.
•Easy and nice UI.
•Awesome feature and category wise classification.
Gmail is one of the trusted brand of google abd every person in the world use it.
I must say if you are not using it, then start using it coz it is a must have app.