{
  "mailbox": "support@example.com",
  "message_id": "AAMkAG...",
  "internet_message_id": "<ticket-1942@example.com>",
  "conversation_id": "AAQkAD...",
  "from": "client@example.com",
  "subject": "Нужна помощь с оплатой",
  "body_preview": "Оплата прошла, но доступ не появился",
  "has_attachments": true,
  "received_at": "2026-05-30T09:15:00Z"
}