Turn on Smart Compose in Gmail


The Smart Compose feature in Gmail offers writing suggestions as you type your email. To turn this feature on, follow the steps below.
  1. Open Gmail.
  2. Click on the Gear icon at the top right of the Inbox.
  3. Click Settings. 
    Click Settings
  4. Click on the General tab.
  5. Scroll down to the Smart Compose heading.
  6. Select Writing suggestions on to activate writing suggestions, or select Writing suggestions off to deactivate writing suggestions.
    Turn it on or off

Visit Google Use Smart Compose for more information.