One of the best ways to market to your users, customers or fans is a newsletter. Leverage the power of websites like Constant Contact and My Emma to notify your audience of what is going on in your business. Not only does it remind people that you exist, but your content could inform potential customers about your industry in a way that could push people towards becoming a customer. Putting a sign up form on your website is simple, and helping you get an account created is a cinch.