“E-mail marketing is a form of direct marketing which uses electronic mail as a means of communicating.” – Wiki
Email marketing is the number one source of customer contact. As you collect email addresses, you are able to send newsletters, coupons and flyers directly and inexpensively to those who’ve signed up. Email marketing is a great springboard for further marketing since you can promote your website, blog and include links to other social networking areas you have set up.