curl -X POST \
  https://api.lumi.com/v1/ \
  -H 'Content-Type: application/json' \
  -H 'X-Requested-With: XMLHttpRequest' \
  -H 'Authorization: Bearer {place your token }' \
  -d '{
    "from": {
      "email": "your@email.com"
    },
    "to": [
      {
        "email": "your@client.com"
      }
    ],
    "subject": "Hello from Lumi!",
    "text": "Greetings from Lumi.",
    "html": "Greetings from Lumi."
  }'