Twilio is a phone service aimed at developers that allows users to make calls, send SMS messages, and use other features without needing to code, making it an ideal solution for those who live abroad or need to manage multiple phone numbers. Setting up Twilio is surprisingly easy, with users able to get a new US phone number in just a few steps. Once set up, users can forward calls to their real number, make calls out from their smartphone app using specialized apps, send SMS messages through various tools like Terminal and Zapier, and receive SMS messages directly in their email inbox or as push notifications on their Mac. With Twilio's API and features like Twimlets and Zapier, users can automate tasks, save voice recordings, transcribe them, and log calls in a Google Docs spreadsheet, among other things. Overall, Twilio provides a flexible and powerful solution for managing phone numbers and making calls, especially for those who need to work abroad or manage multiple lines.