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 with a checkbox and disclosure language, confirmed opt-in, easy unsubscribe via reply STOP, and no sending during restricted hours. Violations carry $500 to $1,500 per unsolicited message in statutory damages. Klaviyo and most SMS platforms enforce compliance by design, but custom opt-in forms must be vetted carefully.