Google mail now supports sending and receiving of money through its Gmail wallet. Before now, we've been sending and receiving money online via different services such as PayPal, Venmo etc. Online payments has been the biggest and fastest way to send, receive money and pay for goods and services. This new feature from Gmail was only available on the web version but now available for Android Devices.
To send money to a friend from Google wallet, you just have to tap on Send Money on the options when composing a message and choose the amount of money to send and finally send the message. The payment will shown like an attachment in your email. You can also use same method to Request Money by choosing Request Money in the options when composing a message.