What do I need to know about U.S. SMS regulations?

Last updated: November 5, 2026

U.S. SMS compliance rules require businesses to register messaging use cases, collect clear consent, honor opt-outs, and follow carrier and FCC requirements.

What you need to know

  • U.S. A2P 10DLC traffic must be registered at the brand and campaign level.

  • Marketing texts generally require clear, documented consent.

  • Recipients must have a simple way to opt out, such as replying STOP.

  • Message content must match the registered use case and avoid prohibited categories.

  • Additional FCC and carrier requirements may affect consent, opt-out handling, and toll-free verification.

Steps to stay compliant

  1. Confirm all sending numbers are registered correctly.

  2. Audit consent language on forms, lead sources, and sign-up flows.

  3. Make sure consent names your business clearly.

  4. Review opt-out handling and suppression logic.

  5. Keep message content aligned with your registered campaign purpose.

  6. Document consent records, message samples, registrations, and opt-out logs.

  7. Monitor deliverability, filtering, and carrier feedback.

Tips

  • Use double opt-in for marketing programs where practical.

  • Avoid shared or resold leads unless consent is specific to your business.

  • Keep opt-out language visible and consistent.

  • Consult legal counsel for industry-specific requirements.

Troubleshooting

  • If messages are blocked, check registration status and use-case alignment.

  • If lead consent is unclear, stop messaging and update consent flows.

  • If opt-outs are not being applied correctly, review suppression logic immediately.