Besides getting customer consent to send SMS, the other compliance is the 2003 Spam Act, in which the company sending the SMS should mention their name. Besides this, the timing and frequency of sending SMSes also matter.
This is where MoEngage’s SMS marketing platform can help. It helps you to set clear opt-in buttons and clear calls to action while requesting your customer’s phone number. MoEngage is also CCPA and GDPR-compliant. [Read here to know more about SMS marketing best practices.