I am using this app since 2 years for receiving and sending emails and I think it is the best app to organise all your emails.
It was already installed on my phone when I bought it. Its interface is good and all options are at one place. Gmail gives me 15 gb of space to store and it is more than sufficient.
More then one email ids can be used at one place and I am using 3 accounts. We can also use other than gmail accounts( like hotmail etc) and it is an useful feature for me, it avoids me to separately login into each account everytime.
It is an very useful app and everyone should use it as it keeps all things very organised.
5 out of 5 stars.