Navigate to Admin > Users and Roles > Edit Users > All Users page. Notice that some users have envelope green icon beside the Edit link. Once a user clicks on such icon, a new email message can be sent directly to the chosen recipient. To set this, please follow detailed steps below:
1. Click Edit link beside the user.
2. Mark the Use login as email radio button.
3. On the field below the Use login as email radio button, enter the email address of the user.\
4. Hit Submit.
Note: If the Use login as email radio button is marked but the email field below it is blank, envelope icon will not be shown on such user.