Measuring the impact of your mobile app messages is not enough; you should also optimize them based on the data and insights you have. To do this, it's important to define your goals and metrics before sending any message, as well as to know your audience and craft a compelling, relevant message. Additionally, you should test your message before sending it, analyze its performance and user behavior afterwards, and use the results to improve your message. Some of the best practices for optimizing mobile app messages include using segmentation and personalization to tailor messages to user profiles, preferences, and behaviors; creating a catchy headline with a strong call to action; testing the message delivery timing, frequency, and trigger; tracking message metrics such as delivery rate, open rate, CTR, conversion rate, uninstall rate, retention rate, and revenue; and experimenting with new message ideas and strategies.