{
  "mailbox": "support@example.ru",
  "message_id": "<CA+n8n-demo-10492@example.ru>",
  "from": "client@example.ru",
  "subject": "Счет и договор по проекту n8n",
  "body_text": "Добрый день, отправляю счет и договор во вложении.",
  "attachments": [
    {
      "filename": "invoice-10492.pdf",
      "mime_type": "application/pdf",
      "size_bytes": 284112
    },
    {
      "filename": "contract.docx",
      "mime_type": "application/vnd.openxmlformats-officedocument.wordprocessingml.document",
      "size_bytes": 491230
    }
  ],
  "received_at": "2026-05-30T10:15:00Z"
}