The email address a student signs up with simply serves as their login username. So, these email addresses don't need to be real, working emails (ex: students could use email@example.com, firstname.lastname@example.org etc).
Also, once they've created their accounts students can update their username to anything of their choosing, and usernames don't need to follow the email address format.
Still have questions? Contact our team at email@example.com to learn more!