Q. Can students access the Course Emailer tab?

No.

HUIT designed it so that only course faculty/staff would have access to the course emailer tab.  Even though you can set it for students to reply and post to the emailer, you need to copy the link and provide it to students.  They will not be able to actually see and use the course emailer page.  The hope is that HUIT will add an option to enable this for student use in the future.