"commonFields" : {
    "mail" : {
				// to control the smtp configuration
			}
}

"urac" : {
	// this object to control the links in the emails
	"links": {...}

	// this object to control the content of the emails
	"mail": {
		"join": {... //this is the join email content configuration}
		"forgotPassword": {... //}
	}
}

"mail": {
        "from": 'me@localhost.com',
    "transport": {
    "type": "sendmail",
    "options": {}
  }
}