Gmail will show a list of contacts as you type the name, and you can use the Up or Down arrow key and hit Enter to select the contact. The name will appear as a hyperlinked text in the body of the message and populate the To: field.
This trick only works with people you've already contacted, and only in the New Gmail interface. It's still a helpful feature nevertheless.
G Suite admins can enable the New Gmail in the Admin Console:
- Go to Apps > G Suite > Gmail.
- Under User settings, scroll down to "New Gmail Early Adopter Program" and select "Allow my users access to the new Gmail UI and features".
- Save.
G Suite users and regular Gmail users can opt in on the feature by clicking on the gear icon in their mailbox and then choosing the option "Try the new [Yourdomainname] Mail" or "Try the new Gmail".
If you spend your time mostly on writing emails, then this cool feature should allow you to be more productive. Go ahead, try it now!