In 2013, email marketing will focus on making a great first impression with consumers. As mobile becomes the primary platform for reading email, marketers will need to focus on responsive design and adaptive HTML to optimize the email experience across devices. Inbox organizers, which automatically sort and prioritize emails, will also change how consumers view and interact with emails. Finally, testing will become more important, as marketers test different subject lines, content, images and layouts to determine what drives the best results for different audience segments. The changing email landscape opens opportunities for innovation in how marketers design emails and engage with consumers.