Verification Types

{
  "status": "valid",
  "result": {
    "deliverable": true,
    "smtp_valid": true
  },
  "score": 0.95
}

{
  "status": "invalid",
  "result": {
    "deliverable": false,
    "reason": "mailbox_not_found"
  },
  "score": 0.10
}

{
  "status": "unknown",
  "result": {
    "deliverable": null
  },
  "score": 0.50
}

{
  "status": "accept_all",
  "result": {
    "catchall": true,
    "deliverable": null
  },
  "score": 0.60
}

// Valid formats
"user@example.com"          // true
"user.name@example.co.uk"   // true
"user+tag@example.com"      // true

// Invalid formats
"user@"                     // false
"@example.com"              // false
"user@.com"                 // false

0.0 ──────────── 0.5 ──────────── 0.8 ──────────── 1.0
 │                │                │                │
Invalid     Unknown/위험     유효 가능성      Valid

function shouldIncludeInCampaign(result) {
  // Strict: Only include high-confidence valid emails
  if (result.status === 'valid' && result.score >= 0.8) {
    if (!result.result.disposable && !result.result.role) {
      return true;
    }
  }
  return false;
}

function canSendTransactional(result) {
  // More lenient: Include valid and accept_all
  if (result.status === 'valid') return true;
  if (result.status === 'accept_all' && result.score >= 0.5) return true;
  return false;
}

function allowRegistration(result) {
  // Block disposable and invalid
  if (result.status === 'invalid') return { allow: false, reason: 'invalid_email' };
  if (result.result.disposable) return { allow: false, reason: 'disposable_not_allowed' };
  return { allow: true };
}