e:mail service

We will have to give up our FiOs service when we move, but we retain Verizon Wireless for our cell phones (one account)  and mobile devices (another account).  To keep our Verizon e:mail address, we were directed to a signup website, but it requires us to pay for a domain name (which we don't want) and $19.95/year.  As we are continuing with our Verizon wireless service, why can't this be waived for Verizon customers?  Your website is for Residential, Business and Wireless, but you still seem to be running as several different companies?