1. First of all you need to be very sure about your target market. Email marketing campaigns cannot be effective without knowing your target market.
2. Once you are sure about your target market, you need to get hold of the email addresses of the people who belong to your target market. The opt in kind of lists are best one in this regard. You can use squeeze pages on your web site to collect this type of data. Once the list of email addresses is ready, half of your work is done. The quality of these lists will have a great impact on the final results.
3. Write an attractive email. The subject line as well as the first few lines of the email are very important and these will define the open rate and conversion rate of your web site.
4. Follow up emails are equally important.