All applicants and admitted students are assigned a Z-ID. It is permanent.
If you don't know your Z-ID:
Your initial password is your date of birth in YYYYMmmDD format. Mmm is the first 3 characters of the Month.
Next, change your initial password to a permanent one at password.niu.edu.
Your email address is your Z-ID@students.niu.edu.
NIU sends email to your NIU mailbox. Go to webmail.students.niu.edu.
Learn more - Student e-mail