One of our terms Of Service is that you must keep an active email account listed in your profile.
To change your email account...
1 - Go into your user control panel.
2 - Look at the left hand "Menu" and click the "Change email address" option (second from the bottom)
3 - Fill in the required fields and click the "Change my email address" button at the bottom of the page.
An activation email will be sent to the new address you enter. You must click on the link in the email to activate your account before you can use it again. (Accounts left unactivated for 30 days or more are deleted.)