{
  "schema_version": "0.1",
  "message_id": "msg-bellows-horn-sub-kofi",
  "type": "intro",
  "sender": {
    "identity": "lena@mail.example",
    "display_name": "Lena Brightwater",
    "verification_level": "oauth",
    "profile_url": "https://lena-books-the-ferry.carrd.example"
  },
  "recipient": {
    "identity": "kofi@mail.example",
    "profile_url": "https://kofi-mensah.example"
  },
  "via_pool": {
    "url": "https://ferryroom.example/pools/horns-and-strings.json",
    "id": "horns-and-strings",
    "name": "Horns and Strings for Records"
  },
  "sent_at": "2026-09-28T09:00:00Z",
  "subject": "A horn sub for Friday",
  "body": {
    "content_type": "text/plain",
    "content": "A horn sub for Friday. Needed Fri 2 Oct, 8:00 pm, the Ferry Room, Pier 3. Friday 2 October, the late set, doors at seven. Charts by email ahead of time. Paid by the band, never by the Pool. Lena Brightwater"
  },
  "transport": {
    "type": "email",
    "message_headers": {
      "X-Bellows-Ask": "a1",
      "X-Bellows-Needed-By": "2026-10-02T20:00:00Z",
      "X-Bellows-Expires-At": "2026-10-02T20:00:00Z"
    }
  }
}