{
  "id": 7,
  "from": "sales@company.com",
  "subject": "Client Presentation Materials",
  "date": "2026-03-07T13:00:00Z",
  "attachments": [
    {"filename": "client_deck.pptx", "size_bytes": 4500000, "content_type": "application/vnd.openxmlformats-officedocument.presentationml.presentation"},
    {"filename": "pricing_sheet.xlsx", "size_bytes": 67000, "content_type": "application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"}
  ]
}
