Tip: While some jurisdictions might only require single opt-in, implementing double opt-in universally is the safest and most defensible approach.
Action: After initial sign-up, send a confirmation SMS asking the subscriber to reply (e.g., "YES") or click a link to verify their subscription. This provides irrefutable proof of consent and filters out invalid numbers.
Provide Clear and Comprehensive Disclosures at Opt-in:
Tip: Be completely transparent about what subscribers are signing up for.
Action: At every opt-in point (website form, in-store sign-up):
Clearly state your company's identity.
Specify the type of messages (e.g., "promotional south africa phone number list offers," "order updates," "news alerts").
Indicate the estimated message frequency (e.g., "approx. 2 messages/week").
State "Message & data rates may apply."
Include clear opt-out instructions (e.g., "Text STOP to unsubscribe").
Provide a link to your full privacy policy and terms of service.
Implement Robust Opt-Out Mechanisms:
Tip: Make it as easy to opt out as it was to opt in.
Action:
Include "Text STOP to unsubscribe" (or local equivalent) in every marketing SMS.
Ensure your SMS platform automatically processes opt-out requests immediately and adds the number to a global "do not contact" suppression list.
Do not try to trick or persuade users to stay subscribed after an opt-out request.