curl -X POST "https://server.smartlead.ai/api/v1/lead-list/500/import?api_key=YOUR_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "leadList": [
      {"email": "john@company.com", "first_name": "John", "last_name": "Doe", "company": "ACME Corp"},
      {"email": "jane@startup.io", "first_name": "Jane", "last_name": "Smith", "company": "Startup Inc"}
    ],
    "fileName": "enterprise-prospects-jan2025.csv",
    "csvSettings": {
      "ignoreGlobalBlockList": false
    }
  }'

{
  "ok": true,
  "data": {
    "total_leads": 2,
    "imported": 2,
    "duplicates": 0,
    "blocked": 0
  }
}

{
  "message": "Invalid API Key"
}