For whatever campus network that you have an account on, you also have an email account on that server. That is to say, you can have several email addresses like you@stat.rice.edu, you@ruf.rice.edu, you@owlnet.rice.edu and you@rice.edu which is an alias to your RUF or owlnet email address.
Fortunately, you do not have to check emails from all these accounts. At Rice, all your emails will be automatically delivered to one of your mail accounts at your choice4.1. This account is called your `mail home'. By default, you mail home is stat.rice.edu but if you prefer another account, you can submit a request form to change your mail home at http://problem.rice.edu.