A/B testing is a powerful way to optimize your email campaigns. You can test various elements such as: - Subject Lines: Test different subject lines to see which one has a higher open rate. - Content Layout: Experiment with different layouts to see which one leads to higher engagement. - Call to Action (CTA): Test different CTAs to see which one drives more conversions. - Send Times: Test different times of the day and days of the week to find the optimal send time.