How do I sign in if my e-mail address has changed? First, sign in using your old e-mail address. Click on the You tab, in the top center of the page There is a menu called "Your account" on the right side of the screen. Click on E-mail under "Account settings". Follow the on screen instructions to change your e-mail address. After you have done this, you will be sent an e-mail message confirming your new address.