Send Scheduled SMS with C# .NET and Twilio Programmable Messaging

Twilio Programmable Messaging now supports Message Scheduling, allowing developers to send SMS messages ahead of time with a single API call. To schedule an SMS, you need a Twilio phone number and a Messaging Service configured, which can be done through the Twilio Console. Then, you can use C# and .NET to create a console application that sends an SMS immediately or schedules it for later using the `sendAt` parameter. The application also includes a feature to cancel scheduled messages before they are delivered. With this tutorial, developers can learn how to send scheduled SMS with .NET and Twilio Programmable Messaging, which can be used in various applications such as appointment reminders, marketing campaigns, or emergency alerts.