I'm in a similar situation, and I'm confused as to how to respond.
I received an acceptance email from the school's generic admissions email but signed by the Dean of the Graduate School. In the email, I was directed to a website where I could accept or decline the admission offer. How, if even at all, am I supposed to respond to this email?
Do I look up the Dean's email address and send a thank you email to him/her? Do I respond to the generic admissions email address, and if so, who do I address it to?