Conducting layout testing is crucial for several reasons: - Improved User Experience: A well-optimized layout ensures that the email is user-friendly and visually appealing. - Higher Engagement Rates: Testing different layouts can help identify the most effective design for engaging your audience. - Data-Driven Insight: It provides valuable data that can guide future email marketing strategies. - Increased ROI: Optimized emails can lead to higher conversion rates, ultimately boosting your return on investment.