address

By creating a secondary account.  You can have up to 6 secondary accounts in addition to your Primary. Here are the instructions-------

http://customer.xfinity.com/help-and-support/internet/adding-new-user-names-or-email-addresses/

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@leakypan wrote: how do I create another Email address

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See the link posted above, or https://forums.xfinity.com/t5/Internet/ANSWERED-How-to-Add-Invite-and-Manage-Users-on-Your-Xfinity/ta-p/2941264.