Security Advisory

CTIA Messaging Principles Compliance

Comprehensive developer guide to CTIA Messaging Principles, consumer consent, SHAFT content restrictions, and opt-out mechanics.

CTIA Best Practices for Application-to-Person Messaging

The Cellular Telecommunications Industry Association (CTIA) establishes the definitive guidelines governing all commercial messaging terminating on US wireless networks.

Core Compliance Mandates for Developers:

Explicit Opt-In Consent: Senders must capture documented consent prior to sending initial messages.
Keyword Automation: Mandatory handling of STOP, UNSUBSCRIBE, CANCEL, and HELP commands.
SHAFT Enforcement: Zero tolerance for Sex, Hate, Alcohol, Firearms, or Tobacco content on standard long-codes.
Sender Identification: Every message must clearly identify the business or sender name.

Non-compliant messaging results in immediate carrier carrier blocking, Carrier Campaign Registry (TCR) revocation, and severe carrier fines ranging from $500 to $10,000 per violation.

Recommended Enterprise Practice: Validate your message copy and opt-out handlers using SMSRiver's Webhook Payload Validator and Delivery Troubleshooter.