{
  "id": "in_reply_to",
  "kind": "datatype",
  "status": "stable",
  "name": "In-Reply-To (Email Header)",
  "doc": "Value of the In-Reply-To header of an email message (RFC 5322, section 3.6.4): the Message-ID of the message that this one answers, or several of them when it answers more than one. Each identifier is enclosed in angle brackets. Mail clients use it together with the References header to build conversation threads.",
  "is_pii": false,
  "categories": [
    "internet"
  ],
  "langs": [
    "common"
  ],
  "classification": "identifier",
  "regexp": "^<[^<>@\\s]+@[^<>@\\s]+>(?:\\s+<[^<>@\\s]+@[^<>@\\s]+>)*$",
  "examples": [
    {
      "value": "<1234@local.machine.example>",
      "description": "Reply example of RFC 5322, appendix A.2",
      "valid": true
    },
    {
      "value": "<3456@example.net>",
      "description": "Reply to the reply in RFC 5322, appendix A.2",
      "valid": true
    },
    {
      "value": "1234@local.machine.example",
      "description": "No angle brackets",
      "valid": false
    }
  ],
  "links": [
    {
      "type": "wikipedia",
      "url": "https://en.wikipedia.org/wiki/Message-ID"
    },
    {
      "type": "doc",
      "url": "https://www.rfc-editor.org/rfc/rfc5322.html#section-3.6.4"
    }
  ],
  "translations": {
    "ru": {
      "name": "Заголовок письма In-Reply-To",
      "doc": "Значение заголовка In-Reply-To: Message-ID письма, на которое дан ответ (RFC 5322)."
    }
  },
  "detected_by": {
    "tools": [
      "metacrafter"
    ],
    "metacrafter_rules": [
      {
        "rule": "inreplytofield",
        "type": "field",
        "match": "text",
        "file": "common/internet.yaml"
      },
      {
        "rule": "inreplytovalue",
        "type": "data",
        "match": "ppr",
        "file": "common/internet.yaml"
      }
    ]
  },
  "quality": {
    "score": 90,
    "missing": [
      "mapping (Wikidata, Schema.org, ...)"
    ]
  },
  "source": {
    "path": "data/datatypes/any/internet/in_reply_to.yaml",
    "url": "https://github.com/apicrafter/metacrafter-registry/blob/main/data/datatypes/any/internet/in_reply_to.yaml",
    "edit_url": "https://github.com/apicrafter/metacrafter-registry/edit/main/data/datatypes/any/internet/in_reply_to.yaml"
  },
  "urls": {
    "html": "http://registry.apicrafter.io/datatype/in_reply_to",
    "json": "http://registry.apicrafter.io/api/v1/datatypes/in_reply_to.json"
  }
}