The key points of the text revolve around the importance of onboarding users successfully, as it can make or break a company's marketing efforts. The author emphasizes that understanding where users are and where they want to go is crucial in creating an effective onboarding messaging campaign. Unlike fleeting product tours and modals, onboarding emails and in-app messages offer a more personal touch, allowing businesses to nurture long-term relationships with their customers. To help businesses achieve this, the author has created The Onboarding Starter Kit, which includes relatable advice, good messages to send, best practices, and a guide on measuring success. By using a combination of nudges, prompts, and persuasion, businesses can increase the chances of activating new signups, customizing their journey, and ensuring successful users.