US Carrier Penalties for Non-Compliant Messaging
US Carrier Penalties for Non-Compliant Messaging
US carriers enforce strict penalties for messaging violations. Understanding the consequences helps you stay compliant.
Types of Penalties
Message Filtering
Carrier spam filters block messages that match spam patterns — high volume from new numbers, prohibited content, suspicious links, or unregistered numbers.
Impact: Messages silently fail. You see "sent" in JustCall but the recipient never receives the message.
Number Flagged as Spam
If recipients report your messages as spam, your number's reputation drops. Carriers flag the number and apply increased filtering.
Impact: Delivery rates drop significantly. Recovery requires reducing volume and improving content quality.
Campaign Suspension
The Campaign Registry (TCR) can suspend your 10DLC campaign for policy violations — sending content that doesn't match your registered use case, prohibited content, or excessive opt-out rates.
Impact: All messaging from associated numbers is blocked until the campaign is reinstated or re-registered.
Financial Penalties
Carriers impose per-message fines for violations:
- AT&T: Up to $10,000 per incident for severe violations.
- T-Mobile: Per-message surcharges for non-compliant traffic.
- Fines are passed through by JustCall to the account holder.
Number Deactivation
In severe cases, carriers can permanently block or deactivate your number.
How to Avoid Penalties
- Register all US messaging numbers for 10DLC or toll-free verification.
- Only send content that matches your registered campaign use case.
- Honor all opt-out requests immediately.
- Maintain proper consent records.
- Monitor delivery rates — sudden drops indicate filtering.
- See SMS Compliance Guide for the full compliance checklist.