It’s time to start building that email! What call to action follows best practices and would be most effective to encourage her frequent pilates students to try out her new app?

Perfect for you! Pilates 24/7" is the most effective call to action because it is concise, benefit-oriented, and creates a sense of urgency and personalization. It directly addresses the target audience ("Perfect for you!") and highlights a key benefit (access to Pilates anytime, anywhere). "Launching a brand new app" and "Introducing a new way to exercise" are too generic and don't convey specific value to the user. "Exciting news for pilates lovers" is better as it targets the audience, but it lacks the direct benefit and personalization of the correct answer. Effective CTAs are clear, compelling, and tell the user what they will gain.