{
  "@context": {
    "@vocab": "https://schema.org/",
    "smtp": "https://smtp.standard/vocab#",
    "rfc": "https://datatracker.ietf.org/doc/html/",
    "EmailMessage": "EmailMessage",
    "SMTPSession": "smtp:SMTPSession",
    "from": "sender",
    "to": "recipient",
    "cc": "ccRecipient",
    "bcc": "bccRecipient",
    "replyTo": "replyToUrl",
    "subject": "about",
    "date": "dateCreated",
    "messageId": "identifier",
    "body": "text",
    "attachments": "attachments",
    "filename": "name",
    "contentType": "encodingFormat",
    "disposition": "smtp:disposition",
    "size": "contentSize",
    "host": "smtp:host",
    "port": "smtp:port",
    "secure": "smtp:secure",
    "authentication": "smtp:authentication",
    "mechanism": "smtp:authMechanism",
    "extensions": "smtp:extensions",
    "transaction": "smtp:transaction",
    "recipients": "smtp:recipients",
    "smtpCommand": "smtp:command",
    "responseCode": "smtp:responseCode",
    "enhancedStatus": "smtp:enhancedStatus",
    "rfc5321": "rfc:rfc5321",
    "rfc5322": "rfc:rfc5322",
    "ehlo": "smtp:EHLO",
    "mailFrom": "smtp:MAILFROM",
    "rcptTo": "smtp:RCPTTO",
    "data": "smtp:DATA",
    "quit": "smtp:QUIT"
  }
}