You can view your students' emails / Google Apps by visiting your PowerTeacher account. 


Once you log in, look for the Student Info icon next to the class that you want to view:


Click the Email icon to view all your students' emails and demographics (contact info) for that class.


I want to mass email my class! What do I do?

Click the button on top that says "Email my whole class"

This will open up GMAIL and paste all your students' email addresses into an email as BCC.