Newsletters are one of the best ways to reward loyalty in the digitial age!
They are fantastic for building relationships and connecting with your customer. The medium provides a fun, visual and focused way to build rapport. Customers who extend the effort to subscribing and read your newsletter are already interested in your product and/or service, meaning a well executed newsletter is a great tool for generating leads and encouraging more customers to visit your site.
No two newsletters should be the same. They must be unique and serve their own purpose. That being said, all of your newsletters should be concise, focused pieces of copy that provide value to the customer by either educating, problem solving, or entertaining.