You can feel free to send updates or LOI to the medadmit email, which is what I did. I believe this has been mentioned earlier in the thread. Also, the admissions team wrote in the post-interview hold email: "Inquiries and updates may be sent via email to
[email protected]." They responded to me the next business day that it was added to my file. Now, do I believe this will have any impact on my decision? Honestly, not really because it's a ranked waitlist, but I did it more for my mental health. Hope this helps.