It's been said that for every subscriber of a newsletter, there's a potential to earn at least $1. Whether or not this holds true for your business model will depend on a variety of factors. Email marketing is as old as time and will continue to be a viable marketing method for years to come. Why? Because from an ROI standpoint it's still a pretty cheap way (when compared to other avenues) to market your brand. However, it's easy to burn out your audience or bore them to deat