There are multiple elements within an email that can be tested:
Subject Lines: Test different lengths, emojis, personalization, and wording to see which ones get higher open rates. Preheader Text: Experiment with varying lengths and messages to complement your subject line. Email Body: Different types of content, like text vs. images, can be tested for engagement. Call-to-Action (CTA): Test different colors, placements, and wording to see what drives more clicks. Personalization: Evaluate how adding personalized elements affects engagement. Layout and Design: Test single-column vs. multi-column layouts to see which is more effective.