Email Marketing to Colorado, USA Doctors and Dentists

We are an aquarium leasing company that specializes in leasing aquariums to dentist and doctor office throughout the state of Colorado. We would like to have someone send out our flyer via email to all of the dentist and doctor offices within a 40 miles radius of our zip code in Colorado and then continue to email that list once a week for a period of 30 days to see what the results look like. We are trying to acquire new customers to lease our aquariums.