Task: Send a mail to dbwscratch.test.id4@gmail.com with subject Testing of Mobile
Steps:
Open gmail app
click on compose button in the bottom left of the screen
enter receiver email address dbwscratch.test.id4@gmail.com  
select the dbwscratch.test.id4@gmail.com email address
click on subject
enter subject Testing of mobile
click on email body
enter details of testing of mobile
click on send icon