To create a Comcast email account, individuals must be XFINITY Internet subscribers. Each Comcast account can have six usernames and emails attached, and users can be managed from the My Account page on the Comcast website.
After logging into the My Account page, users can click "Users & Preferences." Next to the primary tab, there is a tab called "Add a user." Clicking the "Add a user" tab brings up a form for creating a new user. If the primary account has XFINITY Internet, then the new user can access Comcast email using the new login information. The primary account user may need to modify user permissions to grant access to email.