Watch Video here: https://www.youtube.com/watch?v=ueoMssFpMh0 

  1. Sign in to the Google Admin console. - http://admin.google.com
  2. Go to the user's account page.
  3. On the user's account page, click Account.
  4. In the Aliases section, click Add an alias.
  5. In the Add an alias text box, enter the user name. (This name is the portion of the user's email address that appears before the @ sign.)

    Note: As with any other email address, you can't reuse an alias that's already been assigned to someone else, either as a primary address or alias.

  6. If multiple domains have been added to your account, the field to the right of the @ sign is a menu listing available domains. Select a domain for the alias address.
  7. Click Save Changes. It can take up to 24 hours for the alias to become available.



As part of your workflow, notify the user about her new email alias and remind her about its limitations:

Dear USER,

I created a new email alias for you. In addition to your primary email address, samantha.morse@[yourdomain.com], now you can also receive mail at the email alias sam@[yourdomain.com].

However, please be aware that you'll still need to use your primary email address: samantha.morse@[yourdomain.com] to:

  • Sign in to Google Apps
  • Send and receive calendar invitations
  • Sync with your mobile device
  • Share Google Drive files and Sites

Note that it may take up to 24 hours for the email alias to become available.

Regards,
Lee

For more information, see Add or remove an email address for a user.