TCPA Prior Express Written Consent — SMS Marketing

constraint.tcpa-prior-express-written-consent-sms ↗

Federal requirement under 47 U.S.C. § 227 (TCPA) that marketers obtain Prior Express Written Consent (PEWC) before sending marketing SMS messages. Consent must be written (digital opt-in accepted), clearly authorize the specific sender and channel, and be revocable at any time (STOP keyword must propagate to suppression immediately). Statutory damages $500–$1,500 per unconsented message.