I've already submitted the primary application to AMCAS and it has been processed. I've done about 20-30% of my secondary apps. When my MCAT score came out last week, it is not something I am proud of, and will retake. To be courteous, I'd like to withdraw from all of the secondary apps to communicate to the schools that I am not following through with this application cycle. How can I do that? Email every admissions office? Most secondary apps do not have a withdraw option, and neither does AMCAS.