@VACAlover , we did the same. We didn’t even consider handwritten. We emailed as well.
It is so hard to try not to read the tea leaves, but my advice is don’t. DD recieved numerous communications before M10 from a certain school, both from the AO and Coach, she was rejected. She had NO communication beyond mass emails from the school she ended up attending. There is no ryhme nor reason. It will all work out in the end.
A clarification to my earlier comments. Thacher was our son’s first choice by a wide margin and he had been waitlisted. We thought it was important for the School to receive a thank you note from him and to hear that it was his first choice (he got into three other schools) and would attend if admitted, and to hear from us because we were writing the check and agreed with our son. The thank you notes were very short, a single paragraph. We did not write thank you notes elsewhere. I think it helped.
Dream,
I didn’t and wouldn’t… It just sounded like someone else did and I was curious.
Thacherparent,
ahh, ok
I consider that a follow up to the Waitlist, not a “thank you” in the way the term is usually used here. That makes more sense.
In terms of standard thank you notes, DC hand wrote them for AOs. emailed all guides and EC folk. That seems pretty standard. I actually don’t think AOs would care if kids handwrite or email, nowadays.
I guess we are in the minority here 
DC wrote handwritten thank yous to interviewer and tour guides and we also sent handwritten thank yous to interviewer at each school. @ThacherParent – thanks for sharing and glad that your son was able to get off WL and attend Thacher…For those of us waiting, at least a glimmer of hope if end up on WL that maybe it’s possible to get in (at a later date).
I told DC that a handwritten note has a better chance to be filed somewhere and remembered, than an email to be printed and inserted into her application folder. She sent handwritten notes to interviewers.
Sculptor dad, I tend to feel the same way, plus it shows more effort. Then someone told me that everything they receive is just scanned in automatically by admins, because they want the entire file to be electronic. Oh well
At least it will be scanned as a note card and more easily noticed than a copy pasted email text, if they do include all email communications in the electronic file.
DS hand wrote thank you notes to AOs. Emails from us to AO. Emails from DS to student tour guides.
After everything is done, I plan to insist her to send hand written thank you notes to everyone who helped her along the process. It seems a decent thing to do.
DC sent email thanks to the AO’s after interviews and wrote thank you notes for ppl at home that submitted recommendations.