const reputation = await lettr.domains.getReputation('dom_123');

// Target: score > 80
console.log({
  score: reputation.score,
  bounceRate: reputation.bounceRate,  // Keep < 2%
  spamRate: reputation.spamRate       // Keep < 0.1%
});

app.post('/webhooks', (req, res) => {
  if (req.body.type === 'email.bounced') {
    const { to, bounceType } = req.body.data;
    
    if (bounceType === 'hard') {
      removeFromList(to);
    }
  }
  res.sendStatus(200);
});

// 1. User signs up
await sendConfirmationEmail(email);

// 2. User clicks link
await confirmSubscription(email);

// 3. Now safe to send marketing emails

// Find subscribers with no opens in 6 months
const unengaged = await db.subscribers.findAll({
  where: {
    lastOpenedAt: { $lt: sixMonthsAgo }
  }
});

// Remove or re-engage them

const campaign = await lettr.campaigns.create({
  variants: [
    { subject: 'Version A', weight: 50 },
    { subject: 'Version B', weight: 50 }
  ],
  testSettings: {
    testPercentage: 20,
    winnerCriteria: 'open_rate'
  }
});