Leading Marketing Skill

My hubby is a very hard working person. Currently, he owns a small business company with two partners. I can see that their business has growing since two years ago. I believe the business will grow faster with the help of email marketing. I am thinking to introduce the Martin World to them, a leading company that offers marketing list. Hubby could buy leads from them and promote their services through email marketing. I think hubby could find the related and up to date data without hassle. I think this would be a great way to promote services and improve sales.