If I don't pay the deposit because I can't go to that particular pharmacy school anymore, should I email them and let them know out of courtesy or just leave it?
Best to email them to let them know. Common courtesy, plus keeps a paper trail in the (extremely unlikely) event that they claim you enrolled and didn’t pay whatever fee or deposit.
If I don't pay the deposit because I can't go to that particular pharmacy school anymore, should I email them and let them know out of courtesy or just leave it?
You should definitely email them to notify them of your intent to withdraw. I heard it’s possible they could report you to other schools if you’re not a professional and timely applicant.