IMPORTANT: If you selected that users can sign up for texts on a website, your website must have the following elements to be considered a compliant opt-in form.
1. An optional field for users to enter their phone number
2. Explanatory language beneath that field so users know they are signing up to receive texts from you, i.e. “By providing your phone number you are agreeing to receive campaign updates and news at a maximum of X times a month/week/day from ORGANIZATION. Message and data rates may apply. Text HELP for more information. Text STOP to stop receiving messages.”
3. A privacy policy. If data is shared with other organizations (this includes affiliates, like-minded organizations), you must make clear that mobile numbers are not shared with third parties except to perform necessary functions and comply with the law.
Read more about these requirements here.