Do B-schools have email blacklists?

We definitely dont get lists of emails to avoid. Though students will talk amongst themselves if someone is especially annoying. Also sometimes you get an applicant that asks way too much, like a list of 50 questions...or extremely generic ones that seem like fishing since they have no clue about the school. Students are free to respond as many times or as few of times as they want.

Don't take it personally there are days I get 100 emails and things get lost in the shuffle very quickly. Especially during exams or recruiting when you have a million other things going on. I try to get back to most people, but there are some people who get very short answers and some people get blown off quickly. Students are usually pretty good about judging fit and sometimes if they dont feel you fit they wont go out of their way to sway you into applying or attending.