curl --request GET \
  --url https://api.deliverykey.com/v1/emails/{id} \
  --header 'Authorization: Bearer <token>'

{
  "data": {
    "from": "contact@contoso.com",
    "to": "recipient@contoso.com",
    "subject": "Hello, World!",
    "html": "<string>",
    "id": "b722edc1-7ad4-4845-9fa5-e4c4f2a923d4",
    "text": "<string>",
    "created_at": "2022-10-12T18:57:23.000000Z"
  }
}