Klaviyo & Email
TCPA Compliance (SMS)
Quick definition
US federal law governing SMS marketing — requires express written consent before sending commercial texts.
What it actually means
The Telephone Consumer Protection Act (TCPA) governs SMS marketing in the US. Required: explicit opt-in (a checkbox with disclosure language), double opt-in confirmation, easy unsubscribe (reply STOP), no sending during quiet hours (8pm-8am local time). Violations carry $500-$1,500 per unsolicited message in statutory damages — class actions have reached tens of millions for non-compliant senders. Klaviyo and most SMS platforms enforce compliance by design, but custom opt-in forms must be vetted carefully.
Related terms
SMS Marketing (DTC)
Direct text messaging to opted-in subscribers. Higher conversion than email per send, but higher cost-per-send and compliance constraints.
GDPR Compliance
EU privacy regulation governing personal data collection, consent, and processing. Applies to any brand selling to EU residents.