{
  "schema_version": "0.1",
  "message_id": "cl-francais-english-20260315-samuel-amelie",
  "type": "reply",
  "in_reply_to": "cl-francais-english-20260308-amelie-samuel",
  "sender": {
    "identity": "samuel@mail.example",
    "display_name": "Samuel Osei",
    "verification_level": "oauth",
    "profile_url": "https://samuel-osei.example"
  },
  "recipient": {
    "identity": "amelie@mail.example",
    "profile_url": "https://amelie-roux.notion.example"
  },
  "via_pool": {
    "url": "https://correolento.example/pools/francais-english.json",
    "id": "francais-english",
    "name": "Français ↔ English"
  },
  "sent_at": "2026-03-15T19:10:00Z",
  "subject": "Re: Une première lettre · A first letter",
  "body": {
    "content_type": "text/plain",
    "content": "Chère Amélie,\n\nMerci pour ta lettre et pour les portes qui grincent. Le dimanche soir, je planifie les livraisons de la semaine : c’est mon métier. J’apprends le français parce que la moitié de mes clients le parlent. Corrige-moi, s’il te plaît.\n\nDear Amélie,\n\nYour English is better than you think. One small correction, since you asked: “I have been learning English for three years,” not “I am learning English since three years.” I wouldn’t change anything else, especially the doors.\n\nÀ dimanche prochain,\nSamuel"
  },
  "transport": {
    "type": "email",
    "message_headers": {
      "Message-ID": "<cl-francais-english-20260315-samuel-amelie@correolento.example>",
      "Date": "Sun, 15 Mar 2026 19:10:00 +0000",
      "Subject": "Re: Une première lettre · A first letter",
      "In-Reply-To": "<cl-francais-english-20260308-amelie-samuel@correolento.example>",
      "Content-Language": "fr, en"
    }
  }
}