How do we set auto-forwarding in gmail?

1. Login to gmail with your account
2. Click the settings link at the top right corner.
3. Click on the Forwarding and POP/IMAP Tab.
4. In the Forwarding Section Click on Add a forwarding address button.
5. A Modal window with a form to fill the forwarding address will appear.
6. Enter the email address to which you want your emails from current gmail account to be forwarded.
7. A confirmation code will be sent to the email you entered in Step 6.
8. Logon to the email account entered in Step 6 and open the mail sent for confirmation.
9. Click on the link.
10. Once the screen appears that says your forwarding address has been verified, Click on the Verify button in your current account i.e. the account for which you want all your mails to be forwarded.
11. Or you can enter the verification code sent to your email account entered in Step6 and click Verify.
12.  The check the radio button which says "Forward a copy of incoming mail to " and select the email address you entered in Step 6.

You are setup for forwarding your mails to another account.