Gmail lets you reply to emails quickly with Smart Reply.

I'm a longtime user of Inbox by Gmail, another Gmail client by Google for both Android and iOS. One of my favorite features is Smart Reply, which comes in very handy when replying to emails on the phone while on the move. Google says that Smart Reply "already drives 12 percent of replies in Inbox on mobile." If you haven't made the move to Inbox, as from the today, you will be able to take advantage of Smart Reply in Gmail. 

This new feature will provide three responses based on the email you received, thus helping quickly and easily reply to emails. "Once you've selected one, you can send it immediately or edit your response starting with the Smart Reply text. Either way, you're saving time." As almost every Google app these days, Smart Reply relies on machine learning technology to give you the best responses the more you use it. Smart Reply for Gmail will start roll out in English first, followed by Spanish in the coming weeks.

Download or update Gmail in Google Play Store or Inbox by Gmail.