From time to time, MSU faculty, staff, and students want to send bulk e-mail to a number of MSU-related addresses (e.g., all current students, faculty, staff, etc). For these requests, please review Appropriate Use of MSU E-mail Services by Internal Users on MSUnet (link).
Also note that requests of this nature should be submitted to the Chief Information Office (CIO), via your department's infrastructure (i.e., making the request to the Department Chairperson, Dean, or Director).
There is a separate process available to registered student organizations (RSO) to send out bulk email to the MSU student community. The Office of Student Life approves the distribution and then the message is distributed through the Enrollment Services system.