{
  "$schema": "http://json-schema.org/schema#",
  "definitions": {
    "count": {
      "type": "object",
      "properties": {
        "new": {"type": "integer", "minimum": 0},
        "size": {"type": "integer", "minimum": 0},
        "count": {"type": "integer", "minimum": 0},
        "unread": {"type": "integer", "minimum": 0}
      },
      "required": ["count"],
      "additionalProperties": false
    },
    "folders": {
      "type": "array",
      "items": {
        "type": "string"
      }
    },
    "mail_addrs": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {"type": "string"},
          "address": {"type": "string"}
        },
        "required": ["address"]
      },
      "minItems": 1
    },
    "mail_head": {
      "type": "object",
      "properties": {
        "content_type": {"type": "string"},
        "date": {"type": "string"},
        "cc": {"$ref": "#/definitions/mail_addrs"},
        "bcc": {"$ref": "#/definitions/mail_addrs"},
        "to": {"$ref": "#/definitions/mail_addrs"},
        "from": {"$ref": "#/definitions/mail_addrs"},
        "subject": {"type": "string"}
      },
      "required": ["date", "from"]
    },
    "head_list": {
      "type": "array",
      "items": {
        "$ref": "#/definitions/mail_head"
      }
    },
    "mail_body": {
      "anyOf": [
        {"type": "string"},
        {
          "type": "array",
          "minItems": 1,
          "items": {
            "type": "object",
            "properties": {
              "head": {"$ref": "#/definitions/mail_head"},
              "body": {"$ref": "#/definitions/mail_body"}
            }
          }
        },
        {
          "ref": "#/definitions/mail"
        }
      ]
    },
    "mail": {
      "type": "object",
      "properties": {
        "new": {"type": "boolean"},
        "mid": {"type": "string"},
        "size": {"type": "integer", "minimum": 0},
        "head": {"$ref": "#/definitions/mail_head"},
        "body": {"$ref": "#/definitions/mail_body"}
      },
      "required": ["mid"]
    }
  }
}