We have already been using the smart reply with inbox by Gmail and in google allo, This feature saves time by suggesting the reply of the messages. Now, this feature is coming to the Gmail in Android and in iOS also.
Once you open your mail, google.com will suggest three suitable response of this mail.
You can select any of these responses and send it immediately or you can edit the selected response and send the reply.
Smart reply feature uses Machine learning to show you the better response every time in your mailbox. It shows you the responses according to your choices like if you always write “thanks, man” instead of “thanks !”, then smart reply ill show the results accordingly.