Not sure if I'm in the right place here... but it's worth a shot. I work in a large Ophthalmology practice that has a facial aesthetics department (Botox, etc). We are having an event to highlight special pricing on some products and would like to email patients that have been involved in our facial aesthetic department to announce the event. We can leave out specific pricing, so it would really just be to announce this event and would mention the products involved in the special pricing. Does this type of email marketing require an authorization?