{
  "id": 2,
  "from": "design@company.com",
  "subject": "New Logo Concepts",
  "date": "2026-03-02T14:30:00Z",
  "attachments": [
    {"filename": "logo_v1.png", "size_bytes": 520000, "content_type": "image/png"},
    {"filename": "logo_v2.png", "size_bytes": 480000, "content_type": "image/png"},
    {"filename": "brand_guidelines.pdf", "size_bytes": 1200000, "content_type": "application/pdf"}
  ]
}
