<p>Admissions officer: "Do we need to send letters to all our applicants that we're not accepting? Won't they figure it out if they don't get an acceptance by April 1?"</p>
<p>If that doesn't make sense to you then neither does your question. In the time it took to post this thread you could have returned the postcard they sent, or if they didn't give you a postcard, sent them an e-mail.</p>