Mechanism: After a user initially signs up (e.g., via a web form or by texting a keyword), send them a confirmation SMS asking them to reply with a specific keyword (e.g., "YES") or click a link to confirm their subscription.
Why it's Crucial:
Verifiable Proof: Provides irrefutable evidence of consent, protecting you in case of a legal challenge.
Filters Invalid Numbers: Eliminates mistyped numbers.
High-Quality List: Ensures only truly interested and engaged south africa phone number list subscribers are added, leading to higher ROI.
Reduces Complaints: Less likely to send to someone who didn't intend to opt in.
Clear and Conspicuous Disclosures at the Point of Opt-in:
Requirement: At every single point where you collect a phone number for SMS marketing, you must provide specific information to the user.
What to Include:
Your Brand Identity: Clearly state who is sending the messages (e.g., "By opting in, you agree to receive SMS from [Your Company Name]").
Message Purpose: Clearly state what kind of messages they will receive (e.g., "exclusive promotions," "order updates," "news alerts"). Be specific.
Message Frequency: Provide an estimate (e.g., "approx. 4 messages/month" or "message frequency varies").
"Message & Data Rates May Apply": This is a mandatory disclosure in many regions.
Opt-out Instructions: Clearly state how to stop receiving messages (e.g., "Text STOP to unsubscribe at any time.").
Link to Privacy Policy & Terms of Service: Provide direct, clickable links to your full legal documents.
