Today, after weeks of getting 4 auto-emails per day begging me to review my university's roommate matching service, I finally got one with a reply address. I sent an irate note and then realized I'd emailed the housing director. My housing contract is still pending. FML
OP here. The emails had no unsubscribe button. They wanted me to write to some manager about my experience on the site and it would usually have empty parentheses () where the email address should have been.