When you have gathered a collection of email addresses of people who have frequented your website, the best thing to do is create a mailing list to keep interest fresh. A mailing list is the perfect way to remind people of your online presence and keep them up to speed on the latest news regarding your site, including some of the changes the website may have undergone. A mailing list also sends out important alerts. For example, small online businesses are known to use such lists to spread the word on year-end clearances.