{
    "enabled": false,
    "default": "main",
    "workers": 2,
    "queue_size": 200,
    "dispatch_interval_sec": 5,
    "max_retries": 3,

    "providers": {
        "main": {
            "host": "smtp.gmail.com",
            "port": 587,
            "username": "${SMTP_USERNAME}",
            "password": "${SMTP_PASSWORD}",
            "from": "noreply@example.com",
            "from_name": "My Service",
            "encryption": "starttls",
            "auth": "plain",
            "timeout_sec": 30,
            "max_connections": 5
        },
        "transactional": {
            "host": "smtp.sendgrid.net",
            "port": 465,
            "username": "apikey",
            "password": "${SENDGRID_API_KEY}",
            "from": "alerts@example.com",
            "from_name": "My Service Alerts",
            "encryption": "ssl",
            "auth": "plain"
        }
    },

    "templates": {
        "dir": "./templates/email",
        "default_layout": "layout.html"
    },

    "rate_limit": {
        "per_minute": 0,
        "per_hour": 0
    }
}