Starting May 8, 2017, the Roster is now called the Hub. Students can use the Hub to obtain classmates email addresses.
Many students have trouble using the "email" button in the Hub. That button opens the default email software on the computer you are using. If you do not have your computer set up to open your school email within your default email software, it may be better to use the "copy addresses" button in the Hub. That button copies the email address into your clipboard. Then you can paste the email addresses into the "To" field of a new email.