The UM Waitlist Email History page in PeopleSoft allows you to see the system generated messages students are emailed (per term) each time the system tries to auto-enroll the student from a wait list into a class. This page can be helpful when troubleshooting why a student has not been auto-enrolled into the class from the wait list.
You can find this page by going to Records and Enrollment >Term Processing Waitlists> UM Waitlist Email History.