{
  "slug": "duocircle",
  "category": "spam-filters",
  "name": "DuoCircle",
  "description": "Email services company whose products include cloud spam and phishing filtering, backup MX, email forwarding, outbound SMTP relay, and SPF and DMARC management.",
  "website": "https://www.duocircle.com",
  "license": null,
  "platforms": [
    "web"
  ],
  "jurisdiction": {
    "code": "US",
    "name": "United States",
    "eyes": "Five Eyes",
    "eu": false,
    "gdpr": false,
    "cloud_act": "provider"
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "F",
  "score": 38,
  "coverage": 100,
  "summary": "DuoCircle scores 38 out of 100 (grade F) on the spam and virus filtering criteria. It meets 2 of 8 criteria: tells users about requests and TLS configuration. It partly meets no ads or data sales, independent audit and transparency report. It does not meet open source, no trackers or telemetry and security headers. It is based in the United States: Five Eyes member; subject to the US CLOUD Act. Automated tests: SSL Labs grade A and Mozilla HTTP Observatory grade C.",
  "url": "https://privacyratings.com/spam-filters/duocircle/",
  "markdown": "https://privacyratings.com/spam-filters/duocircle/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "no",
      "evidence": null,
      "note": "Closed source."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "no",
      "evidence": "https://www.duocircle.com/legal/cookies/",
      "note": "The website uses Google Analytics 4, plus Google Ads, Meta, LinkedIn and Microsoft Advertising cookies when accepted."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://www.duocircle.com/legal/cookies/",
      "note": "Paid service with no ads, and the privacy notice says personal data is not sold. The website uses Google, Meta, LinkedIn and Microsoft ad cookies to measure its own ad campaigns."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://trust.duocircle.com/compliance/",
      "note": "SOC 2 Type II examinations by Hancock Askew & Co are done yearly, but the report is only shared under NDA."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://www.duocircle.com/legal/legal-requests/",
      "note": "A legal request response policy describes the process and legal standards required, but no request counts are published."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://www.duocircle.com/legal/legal-requests/",
      "note": "The policy promises to notify the affected customer before producing data, unless notice is prohibited by law."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.ssllabs.com/ssltest/analyze.html?d=portal.duocircle.com&hideResults=on",
      "note": "Grade A"
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "no",
      "evidence": "https://developer.mozilla.org/en-US/observatory/analyze?host=portal.duocircle.com",
      "note": "Grade C (50/100+)"
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "pending",
      "evidence": null,
      "note": "Not tested yet."
    }
  },
  "tests": {
    "ssllabs": "A",
    "observatory": "C",
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [
      {
        "name": "Google Tag Manager",
        "host": "www.googletagmanager.com",
        "effect": "no"
      }
    ],
    "tested_at": "2026-10-01T07:06:28.002Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}