Michigan State University has dropped disciplinary proceedings against a student it had accused of violating its e-mail policy by sending a message to hundreds of administrators.

Kara Spencer, a junior who is chief of staff of Associated Students of Michigan State University, received an official warning from the university’s student-faculty judiciary last fall after sending about 390 professors an e-mail message seeking their opinions on a university decision to change the academic calendar.

The university concluded that Ms. Spencer had violated a policy on bulk e-mail that prohibits messages from being sent to more than 30 people at a time. Ms. Spencer argued that the policy was being selectively enforced in violation of her free-speech rights. The university’s complaint against her says she refused to comply with the policy and demanded that charges be filed against her.

Ms. Spencer’s case attracted the attention of civil-liberties groups, 13 of which signed on to an open letter to the university’s president, Lou Anna K. Simon, calling for the e-mail policy to be abandoned and the guilty finding against her to be reversed. Ms. Spencer appealed the decision against her.

In a terse letter sent to Ms. Spencer last week, Rick Shafer, associate director of the university’s judicial-affairs office, said the case against her had been withdrawn by the complainant.

The Foundation for Individual Rights in Education, which played a key role in rallying other advocacy groups to Ms. Spencer’s defense, hailed the university’s decision to drop the case in a statement issued today. The group complained, however, that the university had not dropped the e-mail policy Ms. Spencer was charged with violating, and said it would continue to pressure the university to do so. —Peter Schmidt