This summary covers key points of the text. The author of the tutorial, Harshil Agrawal, introduces a low-code solution for sending SMS messages to thousands of customers using Airtable, Twilio Programmable SMS, and n8n. A workflow is built without writing any code, making it accessible even to non-developers. The tutorial demonstrates how to fetch customer information from an Airtable base, process it in the n8n workflow editor, and send SMS messages with a Twilio node. To complete this solution, one needs to install Node.js, create an Airtable account, set up a Twilio trial account, and configure credentials for both services. The tutorial provides additional resources for further learning and offers potential enhancements for extending the workflow, such as integrating with other databases or adding trigger nodes.