If you use an email account "@calpoly.edu" you are automatically on the class email list or alias.
If you use a different email account, please have your "calpoly.edu" email forwarded to you. Instructions for doing this online are found at this webpage.
http://www.email.calpoly.edu/webfrwrd.html
In order to receive email from Calpoly you need to activate your email account. You can do this free at
http://newemail.calpoly.edu/new/