SMS messaging compliance and abuse prevention.

Industry standards and governing bodies

VoiceTel messaging policies are based on guidance and enforcement standards established by:

• CTIA Messaging Principles and Best Practices
• FCC Telephone Consumer Protection Act (TCPA)
• Mobile carrier A2P 10DLC policies
• The Campaign Registry (TCR)
• Carrier anti-spam and anti-phishing frameworks

These standards apply to all Application-to-Person (A2P) messaging traffic, including:

• Marketing messages
• Appointment reminders
• Customer support notifications
• Account alerts
• Verification codes (OTP / 2FA)
• Conversational business messaging

A2P messaging requirements

All A2P messages must follow these core compliance requirements.

Prior express consent and opt-in

Customers must obtain clear consumer consent before sending SMS messages. Valid opt-in methods include:

• Web forms
• Checkout consent checkboxes
• Keyword opt-ins, such as Text JOIN to 55555
• Paper forms
• Recorded verbal consent
• IVR systems

Consent records must be retained and provided upon request.

Required disclosure language

Consumers must be informed of:

• Message frequency
• Message and data rates disclosure
• Brand or business identity
• STOP instructions
• HELP instructions
• Terms and Privacy Policy references

Example disclosure:

By providing your phone number, you agree to receive recurring SMS messages from VoiceTel. Msg & data rates may apply. Reply STOP to opt out, HELP for help.

How A2P messages should be structured

Carriers expect messages to be transparent, identifiable, and consistent with the registered campaign use case.

Sender identification

The business or brand name should appear clearly within the message. Example:

VoiceTel: Your appointment is confirmed for May 14 at 2:00 PM.

Opt-out instructions

Marketing messages must include opt-out instructions. Approved opt-out keywords include:

• STOP
• UNSUBSCRIBE
• CANCEL
• END
• QUIT

Example:

Reply STOP to opt out.

Help instructions

Messaging programs should support HELP responses. Example HELP response:

VoiceTel Alerts: Reply STOP to unsubscribe. Call 800-555-1234 for support.

Clear and honest messaging

Messages must:

• Match the approved campaign purpose
• Avoid deceptive or misleading language
• Clearly identify offers or promotions
• Avoid URL obfuscation or hidden redirects
• Avoid impersonation of banks, carriers, or government entities

Prohibited messaging content

The following traffic categories are prohibited or heavily restricted by carriers and may result in immediate blocking or fines.

Phishing and smishing

Messages attempting to steal credentials, payment information, or personal data are strictly prohibited. Examples include:

• Fake banking alerts
• Credential harvesting
• Account takeover scams

Carrier penalties may exceed $2,000–$5,000 per violation.

Fraudulent or deceptive messaging

Prohibited deceptive messaging includes:

• Impersonation
• Fake package delivery notices
• Gift card scams
• Fake job offers
• Crypto investment scams

Illegal substances

Prohibited content includes:

• Illegal drugs
• Drug paraphernalia
• Federally illegal cannabis promotion
• Synthetic drugs

SHAFT content

SHAFT refers to high-risk content categories:

• Sex
• Hate
• Alcohol
• Firearms
• Tobacco

Some categories may require special carrier approval, age gating, or may be prohibited entirely depending on carrier rules and jurisdiction.

High-risk financial services

The following are typically prohibited or heavily restricted:

• Payday loans
• Short-term high-interest loans
• Debt consolidation spam
• Credit repair scams
• Lead generation for financial products

Messaging violations and carrier enforcement

Mobile carriers actively monitor SMS traffic for abuse, spam, phishing, and policy violations. Enforcement actions may occur without warning.

Sending without consent

Messages sent without valid opt-in documentation may result in:

• Carrier blocking
• Campaign suspension
• TCPA litigation exposure
• Fines up to $500–$1,500 per message under TCPA regulations

Snowshoeing and number rotation

Snowshoeing is the practice of using multiple numbers to evade filtering systems. Carrier fines may reach $1,000 or more per violation.

URL abuse

Examples of URL abuse include:

• Public URL shorteners
• Mismatched domains
• Suspicious redirects
• Malware links

Excessive complaints or opt-out rates

High consumer complaint ratios can trigger:

• Message filtering
• Throughput reduction
• Carrier audits
• Campaign termination

Misrepresentation of campaign purpose

Traffic that differs from the registered A2P campaign may be immediately suspended. Example — registered campaign use case:

Customer support notifications

Actual traffic sent:

Promotional marketing campaigns

Carrier fine pass-through policy

VoiceTel reserves the right to pass through any carrier-imposed penalties, fines, or enforcement fees resulting from customer-generated traffic violations. Carrier fines may include:

VoiceTel may also suspend or terminate services immediately for severe or repeated abuse violations.

Best practices for compliance

To maintain healthy message delivery and avoid carrier filtering:

• Obtain documented consent before messaging
• Clearly identify your brand
• Keep content relevant and expected
• Include STOP instructions where required
• Honor opt-outs immediately
• Register all A2P campaigns properly
• Use branded domains in links
• Avoid misleading urgency or deceptive language
• Monitor complaint and opt-out rates

Additional resources

• CTIA Messaging Principles and Best Practices
• FCC TCPA regulations
• The Campaign Registry