email

{
  "type": "object",
  "properties": {
    "to": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      ],
      "description": "Recipient email address(es). Single email string or array. Example: \"john@example.com\" or [\"john@example.com\", \"jane@example.com\"]"
    },
    "subject": {
      "type": "string",
      "description": "Email subject line. Required for email delivery"
    },
    "htmlBody": {
      "type": "string",
      "description": "HTML formatted email content. Example: \"<p>Hello <b>World</b></p>\". Either htmlBody or textBody (or both) must be provided. If only textBody is provided, htmlBody will be auto-generated"
    },
    "textBody": {
      "type": "string",
      "description": "Plain text email content. Either htmlBody or textBody (or both) must be provided. If only htmlBody is provided, textBody will be auto-generated by stripping HTML tags"
    },
    "replyTo": {
      "type": "string",
      "description": "Reply-to email address (where replies go). Example: \"support@example.com\""
    },
    "cc": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      ],
      "description": "CC recipient(s). Example: \"manager@example.com\" or [\"manager@example.com\", \"team@example.com\"]"
    },
    "bcc": {
      "oneOf": [
        {
          "type": "string"
        },
        {
          "type": "array",
          "items": {
            "type": "string"
          }
        }
      ],
      "description": "BCC recipient(s) - hidden from other recipients. Example: \"archive@example.com\""
    },
    "threadId": {
      "type": "string",
      "description": "Email thread ID to add this email to an existing conversation"
    },
    "attachmentUrls": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "URLs of files to attach. Files will be fetched and attached automatically. Example: [\"https://example.com/report.pdf\", \"https://example.com/image.png\"]"
    }
  },
  "required": [
    "to",
    "subject"
  ]
}