The feature in "Analytics" tab is a work in progress. You can export results to excel instead.
Course Distribution List
Faculty administrators can go to EduRec to send emailStill in discussion with NUS IT. For now, you can continue to use the IVLE Course DL to send email to students till 31st Jul 2019.
Since the student roster for the past modules will be retained for 1 academic year in LumiNUS, lecturers still can email to their past students should there be a need to send assessment feedback to their students.