邮件 送达率

{
  "success": true,
  "data": {
    "score": 88,
    "grade": "A",
    "blacklist_status": {
      "clean": true,
      "listed_on": []
    },
    "authentication": {
      "spf": {
        "status": "pass"
      },
      "dkim": {
        "status": "pass",
        "selectors_found": [
          "google",
          "selector1"
        ]
      },
      "dmarc": {
        "status": "pass",
        "policy": "quarantine"
      }
    },
    "infrastructure": {
      "mx_servers": [
        "aspmx.l.google.com"
      ]
    },
    "action_items": [
      {
        "priority": "low",
        "action": "Move DMARC toward reject",
        "details": "A stricter policy can reduce spoofing risk after monitoring."
      }
    ]
  },
  "meta": {
    "recipe_name": "email-deliverability",
    "credits_used": 8,
    "credits_saved": 7,
    "duration_ms": 724
  },
  "errors": []
}