There are a lot of tips for email marketing out there: segment your email list, use personalization, email only to people who know your brand, hygiene your email data, avoid spam keywords, create a thoughtful subject line, etc. All of this is great advice! However, a lot of these tips are related to your email data. What if your database doesn’t contain enough information to segment the list or use personalization? More than half of marketers say enriching contact data quality is their most significant barrier to achieving email marketing success. Are you one of these? If so, it may be worth considering a data append for your email database.