{
  "slug": "postal",
  "category": "email-sending",
  "name": "Postal",
  "description": "Open-source mail delivery platform for running your own SMTP relay and email API, with web-based management, webhooks and click and open tracking.",
  "website": "https://docs.postalserver.io",
  "source": "https://github.com/postalserver/postal",
  "license": "MIT",
  "platforms": [],
  "jurisdiction": null,
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": null,
  "score": 44,
  "coverage": 44,
  "summary": "Postal is not graded yet: 44% of its criteria have evidence, and 60% is needed. It meets 4 of 8 criteria: open source, no ads or data sales, open and click tracking off by default and EU data location. Still needing evidence: no trackers or telemetry, independent audit, message content deleted after delivery and encrypted delivery can be enforced.",
  "url": "https://privacyratings.com/email-sending/postal/",
  "markdown": "https://privacyratings.com/email-sending/postal/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://github.com/postalserver/postal/blob/main/MIT-LICENCE",
      "note": "MIT."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "unknown",
      "evidence": null,
      "note": null
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://github.com/postalserver/postal",
      "note": "Free open source software with no ads."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "unknown",
      "evidence": null,
      "note": null
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "content_retention": {
      "title": "Message content deleted after delivery",
      "weight": 3,
      "answer": "unknown",
      "evidence": null,
      "note": null
    },
    "tracking_off_by_default": {
      "title": "Open and click tracking off by default",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://docs.postalserver.io/features/click-and-open-tracking",
      "note": "Tracking only works after a tracking domain is added to a mail server."
    },
    "enforced_tls": {
      "title": "Encrypted delivery can be enforced",
      "weight": 2,
      "answer": "unknown",
      "evidence": null,
      "note": null
    },
    "eu_data_location": {
      "title": "EU data location",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://docs.postalserver.io/",
      "note": "Self-hosted, so message data stays on servers the operator chooses."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T07:02:24.300Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}