Hans Erik Hellborg, a lecturer at Dalarna University, had replied directly to the e-mail instead of forwarding his comments on to a colleague.
The municipal politician says that his email was "inappropriate" and that he regrets sending it.
Mehran Mahmoudi told Swedish Radio news - "I was shocked and disappointed. It is unacceptable," the 23-year-old said.
The Center party councillor's political future is to be discussed by his district party while he has been suspended from teaching while an internal investigation takes place.