It's no problem leaving your e-mail address as it is.
We don't use the e-mail addresses to send out e-mail, only to let people recover lost serial numbers.
We don’t send out a lot of information to our customers, as we know how annoying spam can be. We update information about new releases on Facebook and our newsletter, and we will let customers with a Standard License know when their free upgrade period is about to end. To keep up to date with our information please sign up to our newsletter here and like us on Facebook.