When you start an online newsletter you have the opportunity to collect opt-in email addresses to build your subscription base and establish creditability with your subscribers so that they may want to purchase products from you, a trusting source.
The best part about an online newsletter is that it is free to start up. With an online newsletter you can offer your subscribers juicy daily or weekly information and they will love it. It will slowly build up their curiosity and they may purchase a monthly membership or products from you because they love receiving the information you supply.