Twilio has announced the launch of its SMS service for GitHub Actions, allowing developers to send SMS notifications from their workflows. To get started, users need to create a Twilio account and obtain a phone number with SMS capabilities. They must also set up account credentials, such as an API Key and Secret pair, which can be securely stored using GitHub's secret store. The Twilio SMS Action can be added to a GitHub Actions workflow by using the `twilio-labs/actions-sms` action and providing the necessary credentials and phone numbers. Users can test their workflows by creating a release and triggering the workflow, which will send an SMS notification to the specified phone number.