I visited POIs at half of the schools I'm applying to. Most of the visits were really good; they gave good advice, and I really got to understand their research better. I'm thinking of sending them "Thank you for meeting with me; I just submitted an application" emails.
I'm genuinely appreciative, and I definitely thanked them in person for letting me visit, but I haven't emailed any of them since (except for one guy whose group meetings I attended), and so I'm afraid sending those emails would come across as bad-taste, "Hey, please advocate for me :)" messages.
Any thoughts?