Hey - not sure if you're asking pre or post II but here's their policy on post II (
link here)
"It is not necessary to submit additional letters of recommendation, letters of reference, etc., as these will not influence an applicants place on the waitlist. We do encourage waitlisted applicants to periodically contact the Admissions Office reaffirming their continued interest in the Robert Larner, M.D. College of Medicine at The University of Vermont. You can do this via email to [email protected]."
If you are asking pre-II here is their policy (
link here)
"Changes in your email, name or other information should be updated in AMCAS. We pull our information from AMCAS so as long as this is updated, we will have your correct information. We do not accept updates, additional letters of recommendation, etc."
Edit: I think just addressing it to the admissions committee is probably a safer bet.