Creat sales Email sent to AutoDealships & AppointmentSetting

Long story short. I currently do business with over 100 car dealerships across the US. My product is marketingleads(chosen not to give name of product yet). It's a great product. We can identify everyone who has had his or her credit pulled in the last 24 hours specifically for an auto loan. I've attached a pdf that provides information on our product and feel free to visit our web site if you would like as well. I'm looking to get a better response rate on the emails that I send. I need the recipients to want to receive more information or hear more about our product...to be captivated and intrigued to hear more. I have enclosed the message that I have been using below as well as what I place in the subject line. If I send out 500 emails maybe 40 get open and only 2 people ask for pdf for more information. I’ve enclosed the pdf that I send when I get a response it's an overview of our product. I could also use help with setting appointments or sending decision makers to our got meetings or webinars. The initial email I need created will be one quote. I’m willing to pay per appointment set as well as gotomeeting or webinar when the individual shows (female preferred when it comes to setting appointments, it’s the auto industry:)) thank you Subject lines I have been using Desk of Mike Johnson Marketing Auto Prospects M Auto Leads Special Finance Leads Marketing Car Buyer I need the address to be relevant to the auto industry, and obviously show that I do advertising to car dealerships. Were even giving away free I pad touches for new dealers that purchase a minimum of 1500 leads. I've attatched more info on the document,thank u. Info on my product and email I send it in attatchment