{
  "type": "select",
  "key": "smtp_encryption",
  "constant": "SMTP_ENCRYPTION",
  "description": "SMTP encryption: starttls/tls for port 587 (e.g. Brevo), ssl for port 465 SMTPS, none for plain SMTP",
  "required": true,
  "placeholder": "starttls",
  "validation": "required|string|in:starttls,tls,ssl,none",
  "options": [
    "starttls",
    "tls",
    "ssl",
    "none"
  ],
  "category": "email",
  "sensitive": false
}