When you log in to P. O. Box, you usually see the lists for the "current" semester. P.O. Box switches the future semester to the current semester at the end of the third business day after final examinations are completed for the current semester. For example, if final examinations for summer session end on Friday August 13, P.O. Box will consider the fall semester as the current semester the morning of Thursday, August 19. Exception: The spring semester becomes the current semester the day after winter semester classes end.
You can change the semester either on the login page or on any page within P. O. Box. For example, if it's July 12 and you want to send a note to the students enrolled in your fall class, change the semester from the current summer semester to the upcoming fall semester.
If you select the correct semester and still don't see your class list, work with your department's scheduling contact person (listed by the Office of the Registrar at http://www.udel.edu/registrar/faculty_staff/dept_contacts.html) to verify that your course information is correct.
In general, P.O. Box class mailing lists are available for the current semester, at least two previous semesters, and one future semester. You can send messages to students in your classes for all semesters listed. However, you can only send messages to major lists for the current semester and previous semesters.