Several fundamental elements are essential to the process of experimental design in email marketing:
Hypothesis: A clear, testable statement predicting the outcome of the experiment. Variables: The elements being tested (e.g., subject lines, CTAs, images). Control Group: The segment of the audience that receives the standard version of the email. Test Group(s): The segment(s) that receive the variations. Metrics: The key performance indicators (KPIs) used to measure success (e.g., click-through rate, conversion rate).