Twilio has introduced global SMS guidelines to help developers and businesses navigate the complexities of sending SMS across different countries and carriers. The guidelines provide detailed information on phone number capabilities, message formatting, and local carrier restrictions to ensure optimal deliverability and readability of messages. By using these guidelines, developers can avoid common issues such as garbled or dropped messages, and improve their overall SMS workflow. The guidelines are available online and will be updated over time to reflect changes in global SMS regulations.