{
 "title": "Couryo free email tools",
 "site": "台灣 AI 代理人任務中樞",
 "canonical": "https://penguindriver.com/s/com.couryo%2Ftools",
 "markdown": "https://penguindriver.com/s/com.couryo%2Ftools.md",
 "summary": "Free, no login: verify an email address, check SPF/DKIM/DMARC, explain SMTP errors, build SPF/DMARC.",
 "date_modified": null,
 "retrieved": "2026-10-24",
 "content_sha256": "76552111dda866b003d4cb32b57d508d39964ad94150e82d0e5c03d611a7eff8",
 "fingerprint_basis": "Markdown 版全文，移除贊助行與開頭 front matter，去除頭尾空白",
 "verify": {
  "text_snapshot": "https://penguindriver.com/cite?path=%2Fs%2Fcom.couryo%252Ftools&format=text",
  "how": "下載 text_snapshot 後計算 SHA-256，應與 content_sha256 相同；內容更新時指紋會改變"
 },
 "sources": [
  {
   "name": "https://couryo.com/en/tools",
   "url": "https://couryo.com/en/tools"
  }
 ],
 "source_count": 1,
 "cite_as": {
  "zh": "Couryo free email tools｜台灣 AI 代理人任務中樞。https://penguindriver.com/s/com.couryo%2Ftools（資料日期 未標示，擷取 2026-10-24）",
  "apa": "台灣 AI 代理人任務中樞. (2026). Couryo free email tools. Retrieved 2026-10-24, from https://penguindriver.com/s/com.couryo%2Ftools",
  "markdown": "[Couryo free email tools](https://penguindriver.com/s/com.couryo%2Ftools)（台灣 AI 代理人任務中樞，2026-10-24）"
 },
 "license": "可引用，請附上正式網址與資料日期"
}