If you are sending more than 1,000 sms per day or more than one message per second, you need to comply with the following when setting up your campaign.
In the Requirements section, select the following as they apply to your company:
Note: The requirements section details the information required by all major communications carriers for companies sending more than 1,000 SMS messages per day or more than one message per second.
I am collecting and processing consumer opt-in.
I am collecting and processing consumer opt-out.
I have implemented a response to the HELP keyword informing customers of how they can contact the message sender.