Being accepted or rejected is the whole point. We would not be having this post if the magical word "accepted" had been part of the e-mail. One suspects that for the present protagonists, a rejections letter would been received with equal disdain because the size of the letter was 4 x 6, instead of the 4 x 9 or the more formal 9 x 12. The MO for, at least part of the business world is "don't call us, we will call you."
As for the school using UPS to overnight a letter may be real but is it limited to to those accepted or do the rejections get equal treatment? This gripe session is starting to sound like a case of woulda, shoulda, coulda. Yes it would have been nice, should have been done, and could have been handled differently, but the fact remains, that the schools chose not to. If there was failure in their conduct, maybe we should be the ones to start acting professionally and move on to our next phase in life.