Last updated: 06/16/2026
This policy explains the messaging-compliance standards that apply to all use of the Signilio Services. It is incorporated into the Terms of Service and should be read with the Acceptable Use Policy. It is provided for general guidance and is not legal advice; you are responsible for your own compliance and should consult qualified counsel.
Legal framework
TCPA (Telephone Consumer Protection Act). The primary federal law governing SMS marketing. It requires prior express written consent for promotional messages sent with automated systems, observes time-of-day restrictions, requires honoring the Do-Not-Call registry and internal do-not-contact lists, and carries statutory damages of $500 per message (negligent) to $1,500 per message (willful).
CTIA messaging principles. Industry best practices that carriers enforce: clear sender identification, transparent disclosure of message nature/frequency/cost, functional opt-out, and prohibited-content enforcement.
State laws. Several states have their own "mini-TCPA" statutes with additional consent or timing requirements. You are responsible for compliance in the jurisdictions you message into.
Consent
Before sending a promotional message, you must have the recipient's express written consent. Consent must be affirmative and documented (e.g., a signed form, website checkbox, or verified text-to-join). Pre-checked boxes, implied consent, and buried disclosures do not satisfy the law. Your opt-in flow should clearly state who is sending, the type and purpose of messages, the expected frequency, that message and data rates may apply, and how to opt out.
Message content
Every message should clearly identify the sender, contain accurate and lawful content (no misleading claims or prohibited offers), and — for the initial and recurring program messages — include opt-out instructions such as "Reply STOP to unsubscribe."
Timing and frequency
Send only within permitted hours (generally 8 a.m.–9 p.m. in the recipient's local time, subject to stricter state rules), and keep frequency consistent with what the recipient agreed to at opt-in. Message blasting beyond what recipients expect is prohibited.
Opt-out handling
Recipients must be able to opt out at any time using standard keywords (STOP, UNSUBSCRIBE, CANCEL, QUIT, END). The platform honors these automatically and blocks further messages to that number. Opt-outs must be honored without delay. You must also scrub against applicable do-not-call and internal do-not-contact lists.
Recordkeeping
Maintain records of consent (date, method, and proof of opt-in), logs of messages sent and opt-outs received, and audit trails sufficient to demonstrate compliance in the event of a carrier or regulatory inquiry.
Consequences of non-compliance
Non-compliance can result in civil lawsuits and class actions ($500–$1,500 per message), carrier suspension and blacklisting, and reputational harm. Signilio enforces these standards to protect all senders, and may suspend or terminate accounts that present compliance risk.
Contact
Compliance questions: admin@signilio.com