Map each channel (email, SMS, calls, cookies) to the law that governs it by region. Use specific opt-ins where required (e.g., SMS/auto-dialed calls), provide easy opt-outs, and log consent metadata (who/what/when/source) with fast suppression. Align templates to clear & conspicuous standards and review language quarterly.

The most frequent—and expensive—mistakes are hidden endorsements, misleading price/“sale” claims, non-compliant email/SMS consents, and sloppy contests/sweepstakes. Add recurring-billing problems (unclear free trials, hard-to-cancel “negative options”) and you have a recipe for complaints and enforcement. Fix the basics: disclose plainly, substantiate claims, capture/ honor channel-specific consent, and publish complete promotion rules with records to prove it.