SMS banking allows customers to access selected banking services through SMS messages on their mobile phones. It is an easy way for banks to reach customers anywhere instantly with urgent messages like alerts. Banks can use SMS banking to alert customers of potential fraud and send mass notifications. The Coretalk software discussed in the document focuses on value added services and additional products offered by banks through SMS messaging. It provides examples of how banks can use SMS for customer service, updates and reminders, notifications, and targeted marketing campaigns. Banks found the tool valuable for large-scale communication with customers and saw improved performance and customer service scores as a result.