When you go to 'My Profile' in eCampus you can edit some sections of your details. However, you can't edit your email address. To alter your email address visit the Student Portal and log in. Once changed and saved there, it will update your eCampus email address within about 3 hours.
NOTE: Yahoo email addresses will be converted to @polytechnicwest.wa.edu.au for eCampus, so that emails can be delivered.