Building a Compliance Engine: CAN-SPAM, TCPA, GDPR for SaaS

When building LeadHunting AI, compliance was not optional — it was a core feature. Here is how I implemented a multi-layered compliance engine.

CAN-SPAM Compliance

Every email includes:

• Unsubscribe link (one-click via List-Unsubscribe header)
• Physical mailing address in footer
• Sender identification in From header
• No deceptive subject lines

List-Unsubscribe: <mailto:[e-mail]>, <https://leadhunting.app/unsubscribe?token=...>
List-Unsubscribe-Post: List-Unsubscribe=One-Click

TCPA Compliance

For SMS and phone-based leads:

• Explicit consent tracking (timestamp + IP + user agent)
• Audit trail stored in ConsentRecord table
• Opt-out processing within 10 business days
• DNC (Do Not Call) list integration

GDPR Compliance

• Data portability: JSON export of all user data
• Right to erasure: 30-day grace period then anonymization
• Consent management: granular per-category opt-in
• Data Processing Agreement (DPA) page
• Sub-processor disclosure

Platform Policy Compliance

Rate limits enforced per platform:

• Twitter: 1,500 posts/month (free tier)
• LinkedIn: 100K API calls/day
• Facebook: 200 calls/hour per page
• DEV.to: 10 articles/hour
• Hashnode: 10 posts/hour

Implementation

// Pre-flight check before any social post
const result = await runPreFlightCheck({
  type: 'social_post',
  platform: 'twitter',
  userId,
  content,
});

if (!result.allowed) {
  return res.status(429).json({ error: result.reason });
}

Results

• Zero spam complaints
• Zero platform bans
• Zero GDPR violations
• 100% policy compliance

Try It

• Website
• Pricing
• GitHub

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Originally published on leadhunting.app

How do you handle compliance in your SaaS? Share below!