This tutorial guides users on how to send SMS messages with content retrieved from a MySQL database using Java Spring Boot and the Twilio API. To achieve this, users need to set up a working MySQL database, configure the environment variables for their project, including Twilio credentials and phone numbers, add the necessary dependencies in their pom.xml file, and create a REST controller to handle the SMS request. Once completed, users can run their spring boot application, navigate to a specific route, and trigger the sendSMS() function to send an SMS with content from the database. The tutorial also provides guidance on what's next for sending SMS from a MySQL database.