You must login to your profile to access email.
Email – Access
This feature allows you to view your updated Comcast.net emails.
•While logged in to your profile, Press softkey Menu from Home screen.
•Press the left or right Navigation Key 
or 
to choose Email icon in the Menu screen, and press the center Navigation key/SEL/
to select email.
•Email screen with the list of Read and Unread emails will be displayed.
Pressing Off will show the CIS without the Email alert even though 2 emails are still unread.
When there is a new email the arrival of the new email is indicated by the Email alert 
where 3 is the number of new emails. Once the mailbox is accessed this alert disappears even when there are unread emails in the email inbox.
If you have not configured an email address for your account, then you will see the following message
65