The interviewer wants to know more about your creative portfolio and to hear you speak passionately about some of your favorite projects. Walk the interviewer through the project you are most proud of, highlighting your effort and any big wins or accomplishments along the way. Express any new skills you learned while completing this unique project. While it's good to choose an email marketing project, the goal is to highlight your knowledge of the marketing field and demonstrate your understanding of marketing principles, so discuss the project that best meets that goal.