A/B testing, or split testing, can be a powerful tool in your email marketing strategy. It involves sending two variations of an email to a small segment of your audience to see which performs better. Metrics to test can include:
Subject Lines: Test different subject lines to find out which one gets a higher open rate. Content Layout: Experiment with different layouts and designs to see which one has a higher CTR. Call to Action (CTA): Test different CTAs to determine which one drives more conversions.