Is the university paying for the email account? Even a university administration would not be dumb enough to try to censor messages from student-owned computers and email accounts, even if they used university wifi.
Iowa State University, as you sign in and become a student...you get a university email address (like Joey.Jones@IowaState.x).
You get file storage space, data sharing capability (like Googles deal), a calendar, etc. So what they are hinting at...that university system will not turn into some massive political tool. If you want to use your own personal account, to send email to like-minded students who have a Yahoo or Google email address....you can still do that.
It would be the same way at a company which provides email addresses, and they mandate no religious emails, NCAA football emails, or political stuff.
The suit cites several examples of the schools bias, such as a policy prohibiting students from broadcasting email from a university account to solicit support for a candidate or ballot measure.
The key words there are a university account. I have no problem with that if it also includes faculty and staff. Using university services to fund-raise for or support particular candidates should be blocked.
The other stuff about bias committees is typical snowflake BS and should be suppressed.
Want a side bet on that?