The email address listed in the Your Account page is the address to which Red Hat Network sends email notifications if you select to receive Errata Alerts or daily summaries for your systems on the Your Preferences page.

To change your preferred email address, click Change Email in the left navigation bar. You are then asked for the new email address. Enter it and click the Update button. A confirmation email is sent to the new email address; responding to the confirmation email validates the new email address. Note that false email addresses such as those ending in "@localhost" are filtered and rejected.