curl --request POST \
  --url https://app.spotzee.com/api/ext/generic/email/smtp-server-test \
  --header 'Authorization: Bearer <token>' \
  --header 'Content-Type: application/x-www-form-urlencoded' \
  --data hostname_ip=www.example.com

{
  "status": "success",
  "data": {
    "connection": "success",
    "details": {
      "hostname": "<string>",
      "port": 123,
      "security": "<string>",
      "response": "220 smtp.example.com ESMTP ready",
      "features": [
        "STARTTLS",
        "AUTH LOGIN",
        "AUTH PLAIN",
        "SIZE 35882577"
      ]
    },
    "error": "<string>"
  }
}