"The fact of the matter is, gender based price discrimination is against basic human rights," read the email, a copy of which was shared with BuzzFeed Canada.
"I understand what you are trying to do, but you cannot fight discrimination with more discrimination."
The man said he would file a human rights complaint against the Morrissey House unless the discount was discontinued.
"I think he was serious," Serre said.
The Human Rights Tribunal of Ontario could not confirm whether a complaint had been filed against the Morrissey House, saying there hadn't been enough time to process any new filings as of Monday.