let net = $.net;

// Create a mail Object
let mail = new net.Mail({
   sender: {address: "[email protected]"},
   to: [{ name: "John Doe", address: "[email protected]"}, {name: "Jane Doe", address: "[email protected]"}],
   cc: [{address: "[email protected]"}, {address: "[email protected]"}],
   bcc: [{ name: "Jonnie Doe", address: "[email protected]"}],
   subject: "subject",
   subjectEncoding: "UTF-8",
   parts: [ new net.Mail.Part({
       type: net.Mail.Part.TYPE_TEXT,
       text: "The body of the mail.",
       contentType: "text/plain",
       encoding: "UTF-8",
   })]
});

// Set mail server configuration.
let mailConfig = {
    "mail.user": "<your-user>",
    "mail.password": "<your-password>",
    "mail.transport.protocol": "smtps",
    "mail.smtps.host": "<your-mail-provider-host>",
    "mail.smtps.port": "465",
    "mail.smtps.auth": "true"
};

let smtp = new net.SMTPConnection(mailConfig);
// Send the mail Object with SMPT
smtp.send(mail);

// Send the mail Object from the built-in mail send method.
let returnValue = mail.send(mailConfig);

$.response.setBody(JSON.stringify(returnValue));