Thumbtack.com has successfully integrated SMS alerts into its sales and marketing process using Twilio, resulting in over 175,000 job leads sent through the channel since integration, with a significant increase every week. The company's business model relies on fast and reliable communications between buyers and sellers, making SMS alerts crucial to its success. Thumbtack's use of SMS has not only improved customer experience but also led to a significant growth in service providers and customers, transforming the platform into a more competitive sales and marketing channel.