For those of you who've sent LOI's or other updates: do schools usually acknowledge the updates in some way? A couple of weeks ago I sent an update about my activities by snail mail to every school that I've applied to that hasn't rejected me. I heard nothing back. Last week I sent an e-mail to update schools about a small change in the biographical information, so far 6 schools replied by e-mail. Is it normal that I haven't heard anything about the update i sent by mail?