System HR Services, How to change an employee's preferred email address
In order to change the school email field in your My UI Info tab (https://www.hr.uillinois.edu/myinfo), an employee of UIUC must contact Academic Human Resources (AHR) at: (217) 333-6747 | or firstname.lastname@example.org.
I am an Academic Employee of UIUC. How do I change my preferred email in NESSIE?
This office can change the email field.
You CAN update your personal email field at that link above however.