In my opinion, in-product messaging platforms are most valuable for boosting product adoption, because they help users understand and experience the core features of a product at the right moment within their workflow. Through contextual guidance, onboarding tours, tooltips, and targeted prompts, users can quickly learn how to use key functionalities, which reduces confusion and shortens the learning curve. While improving user engagement, reducing churn, and delivering timely customer support are important benefits, they are largely outcomes of successful adoption in the first place. Therefore, strong product adoption acts as the foundation for long-term user engagement and retention, making it the most critical impact of in-product messaging platforms.