Sending From Forwarder in Gmail

1. Click the gear icon  in the upper right, then select Settings.
2. Select the Accounts and Import tab (or Accounts tab, if you’re using Google Apps).
3. Under Send mail as, click Add another email address.
4. In the ‘Email address’ field, enter your name and alternate email address.
5. Choose “Use Gmail’s servers to send your mail (this is easier to set up)
6. Click Next Step >> and then click Send Verification. Gmail will send a verification message to your forwarder  to confirm that you own it, that will be bounced back to your designated email.
7. Now when you choose to send a new piece of mail, at the very top of the screen there will be a drop down menu for you to choose the email you wish to send from.