List building is one of the most important and effective means for increasing operational profitability. For example, while 62% of Internet users might participate in social media at times, over 85% of those online use email, many on a regular basis. These types of statistics and facts highlight the primary importance of email marketing for the success of any online business. And the results from email marketing are only as good as the subscriber list itself. A high quality email list will generate a higher response rate and more sales.