The Twilio platform provides API to programmatically send, receive, and track SMS messages worldwide, while also letting you test your SMS-enabled applications within a sandbox environment.
Using your Internet browser, visit https://www.twilio.com/. The Twilio landing page will be displayed with the sign up and log in options.
Click on the SIGN UP button. You will be navigated to the new user registration form.
Fill out the form with the relevant information and then click on the Get Started button. You will be navigated to the Human Verification page:
In this page, select your country from the drop-down list and type your phone number in the textbox.
Click on the Text Me button. You will be navigated to the Enter Verification Page. Meanwhile, your mobile phone will receive an SMS message containing a verification code.
In the Enter Verification Page, enter the verification code and click on the Submit button.