At this point, I wouldn't start emailing. Look through threads here as mentioned to get an idea & check PTCAS information about the schools. Some list in there when they start notifying. If it gets to be Feb/March with no response & you have to make a decision about a deposit somewhere else, sure go ahead and politely email to find out where they are in the decision process as you're being required to make decisions at that point. Right now, I'd say it's just overkill.