Define Your Goal: Clearly outline what you want to achieve, such as increasing open rates or improving click-through rates. Choose Your Variable: Select the element you want to test, e.g., the subject line or the CTA. Create Variations: Develop two or more versions of your email with slight modifications. Segment Your Audience: Divide your email list into equal segments for each variation. Send and Measure: Send the emails and track the performance metrics. Analyze Results: Compare the performance of each variation to determine the winner.