A toll-free is a also a 10-digit number that starts with one of the toll-free codes, prefix like 800, 888, 877, 866, 855, 844, or 833. It is perfect for business that require high-volume of text messaging at scale and fast deliverability.
Businesses typically used it within US or Canada for transactional messaging, such as registration confirmation or for sending one-time passwords. It can also be used for promotional or marketing-type messaging, however it is required to ensure that all recipients have opted-in and that you maintain a low opt-out ("STOP" reply) rate to avoid message filtering or interruption.
It is usually acquire by businesses because it allow end-users to avoid high fees with messaging and also making a call. In terms of speed and flexibility, they’re easy to provision and serve a variety of purposes.
Please visit article link below regarding process of registering your Toll-free number: