If you are using email marketing to promote your website and want to make sure that it is effective then you can choose the buy opt in email lists. This enables you to identity your target consumers easily and reach out to them. The opt in email list is available with the online media companies and it is basically the lists of email of people who have agreed to receive email through email marketing. using the opt in email lists allows you to promote your website to the people who are likely to be interested in knowing about your products and have in fact subscribed to get such emails. When you send the emails to them then they click on it and are willing to visit your site. This way you are able to enjoy a better click through rate for your email marketing campaign and make it more cost effective. Email marketing is a part of direct marketing only and is considered to be very effective. The advertiser is dependent on a third party and reaches out to the target clients himself. So it is important that the email used for this purpose is designed carefully. You can contact the online media companies that can help you design your email and can also help you to buy opt in email lists.