Add an Additional Email Address
Navigate to the settings page by selecting your email login at the bottom of the navigation menu, then click Settings.
You should now be on your Profile settings.
Click on the link Add an email address.
Input the new email address and click Continue.
An email newly created email. Click the link in the email to verify.
Click Finish.
To login using the newly created email, go back to the login screen and use the same password as the primary email.
Remove an Additional Email Address
Navigate to the settings page by selecting your email login at the bottom of the navigation menu, then click Settings.
You should now be on your Profile settings.
In the Email addresses section, click on the email you want to remove.
Click the red link Remove email address.
Click Continue to confirm.
Click Finish.