SMS Subscriber

An SMS subscriber is an individual who has opted in to receive text messages from a business or organization. By subscribing, they give consent to receive marketing, SMS alerts, reminders, or transactional messages via SMS. SMS subscribers are usually added to a contact list after confirming their preference to receive messages. Each subscriber in the network has a unique identifier, often referred to as called subscriber identification, for routing and tracking messages.

Importance of Managing SMS Subscribers

SMS subscribers are the foundation of any SMS marketing or communication campaign. It’s essential that businesses familiarise themselves with SMS marketing laws in the U.S., including the Telephone Consumer Protection Act (TCPA) and the CAN-SPAM Act. By ensuring subscribers have explicitly consented to receive messages, businesses can:

• Stay compliant with privacy laws
• Reduce the risk of legal penalties
• Build trust and transparency with customers

• Improve SMS deliverability and engagement

   

Effective subscriber management isn't just SMS best practice, it's a compliance requirement.

Managing Reassigned Numbers with the RND

Even with proper consent, numbers can be reassigned to new users, which could lead to accidental messages being sent to someone who never opted in. To mitigate this risk, the FCC created the Reassigned Numbers Database (RND). The RND allows businesses to check whether a number has changed ownership since the date of consent.

Why it matters:

• Protects your business from violating the TCPA
• Reduces spam complaints and opt-outs
• Enhances compliance when sending to U.S. mobile numbers

Businesses who send text messages to subscriber lists are recommended to:

• Regularly review and clean their contact lists
• Keep records of opt-in dates
• Manually check numbers using the RND at www.reassigned.us when needed

SMS Subscriber Management Tools

Notifyre’s subscriber management features are designed to help businesses stay compliant and organized when sending SMS messages.

Automatic Opt-Out Handling: Notifyre automatically manages opt-outs by placing contacts who reply with “STOP” or "UNSUBSCRIBE" into a dedicated Unsubscribed contact group. This ensures that anyone who chooses to opt out is immediately excluded from future SMS campaigns, helping businesses stay compliant with SMS marketing laws. The Unsubscribed group is updated in real time, providing peace of mind that your messages are only reaching those who have given proper consent.