Sapere cosa funziona.
Basta ipotesi.

interface CampaignAnalytics {
  total_sent: number;
  delivered: number;
  opened: number;
  clicked: number;
  bounced: number;
  complained: number;
  open_rate: number;
  click_rate: number;
  click_to_open_rate: number;
}

const response = await fetch(
  'https://api.sendseven.com/api/v1/email-campaigns/camp_123/analytics',
  {
    headers: {
      'Authorization': 'Bearer YOUR_API_TOKEN',
      'X-Tenant-ID': 'YOUR_TENANT_ID'
    }
  }
);

const analytics: CampaignAnalytics = await response.json();
console.log(`Open rate: ${analytics.open_rate}%`);
console.log(`Click-to-open: ${analytics.click_to_open_rate}%`);

const response = await fetch(
  'https://api.sendseven.com/api/v1/email-campaigns/camp_123/recipients?limit=50',
  {
    headers: {
      'Authorization': 'Bearer YOUR_API_TOKEN',
      'X-Tenant-ID': 'YOUR_TENANT_ID'
    }
  }
);

const { items } = await response.json();
items.forEach(r =>
  console.log(`${r.email}: ${r.status} (opened: ${r.opened_at || 'no'})`)
);