A Java Spring Boot application is built to send SMS with random thought-provoking questions from a MySQL database. The application uses Twilio's Messaging Service to schedule and send messages, which can be customized with sender phone numbers and personal phone numbers stored as environment variables. The application includes a QuoteController that retrieves a random quote from the database, constructs a message instance using Twilio's REST API, and schedules the message for later transmission. The application is designed to be extensible, allowing users to respond to inbound messages, store responses in the database, or schedule SMS transmissions.