Opt-out is a state change, not a keyword trick.
Your system should recognize and retain revocation, suppress future messages that require that consent, and avoid forcing people through unnecessary friction.
FCC revocation rule
The FCC has clarified that consumers can revoke consent to robocalls and robotexts by reasonable means. Its rule identifies replies such as STOP and similar standardized responses as examples, and requires revocation requests to be honored within a reasonable time not to exceed 10 business days. The FCC also limits the sender to a one-time confirmation text in the covered circumstances.
Operational design
- Normalize common opt-out phrases and do not rely on exact capitalization.
- Write the suppression state to the contact record.
- Ensure every active workflow checks suppression before sending.
- Do not re-import suppressed contacts as “new” campaign recipients.
- Keep an audit history of opt-out events.
- Train staff to recognize human-language revocation requests, not only automation keywords.
CTIA best-practice layer
CTIA’s messaging guidance also calls for consumers to have the ability to opt out and for senders to honor those requests. Treat this as a core product requirement when comparing texting platforms.
Keep going
Sources & verification
Product features, pricing and compliance references can change. These links are the primary sources used for the claims on this page.
- FCC — rules on revoking consent for robocalls and robotexts
- CTIA — Messaging Principles & Best Practices
- CTIA — Messaging Principles & Best Practices (May 2023)
Last checked: October 1, 2026.