Students can send emails to their professor within a WeBWorK problem.  The default setting is to email any member of the WeBWorK course that is at or above a TA level, including all professors and admins.  We've set up WeBWorK so that some members of the Math/Stat and ITS departments are administrators and can assist with management of the course.  If a student emails a question, the email goes to the professor and all the administrators of WeBWorK.  To limit the recipients of these emails, adjust the settings per the instructions below. 

These settings will limit the email being set to the addresses in the "Additional addresses" box.