Email marketing is the cornerstone of a good content marketing campaign. If it’s done right the ROI is one of the best in the industry. If done wrong it’s a colossal waste of time. Out of all the tips I am giving this week the two most important are to be consistent and to be useful. People should know when your email will be coming and they should know there will be at least one piece of new and useful content. That is how you build your list and how you prevent subscriber drop off. Here is an infographic with more tips for you.