> ## Documentation Index > Fetch the complete documentation index at: https://flow9.mintlify.site/llms.txt > Use this file to discover all available pages before exploring further. # Compliance: DNC & suppression > Keep outreach compliant — the Do Not Call list, SMS opt-outs, and the email suppression list. Funnel enforces contact preferences automatically across every campaign. Two registries do the work — you'll find both under AI Campaigns. ## Do Not Call (DNC) list Numbers on the DNC list are **excluded from all outbound voice and SMS**, in every campaign, for your whole workspace. Suppression is independent of contact records — it survives even if the contact is deleted. * **Add one number**: enter it with its country code, optionally with a reason, and click **Add to DNC**. * **Bulk import**: upload a `.csv`, `.txt`, or `.xlsx` — every number found is normalized and added; invalid or duplicate entries are previewed and skipped. * **Remove** an entry to make the number reachable again. Separately, contacts who reply **STOP** to an SMS are opted out of texting automatically — no action needed from you. ## Email suppression list Addresses here receive **no campaign email**. You never add entries manually — they arrive automatically when a recipient **unsubscribes**, a send **hard-bounces**, or the message is **marked as spam**, and each entry shows its reason. Every campaign email carries an unsubscribe link; clicking it adds the address here and shows the recipient a confirmation page. You *can* remove a suppressed address to make it emailable again — but re-sending to people who unsubscribed or bounced hurts your deliverability. Only do it when the entry was a mistake. ## Where campaigns check these lists At dispatch time, every campaign automatically skips DNC'd numbers, STOP opt-outs, and suppressed email addresses. The campaign form also warns you up front when selected recipients are already suppressed, and excluded contacts are counted in the scheduler's "no contacts to dial" explanations.