Newsletter is one of the best ways to continue to coerce business to your website. Think about it. If you are constantly in touch with your customer-base, you can continually coerce them back to your website and sell to them.

On the whole this means that you can keep selling to your existing customer base if they are satisfied with your products and services. Once you have satisfied a customers' needs, they are more likely to buy from you than from your competitor. In order to achieve this, you must constantly stay in touch with your customers. And you do this by either sending a postal mail message (which costs a lot of money right?) or by emailing them (which costs very little at all).