how to send an email in flex

import com.coltware.airxmail.INetAddress;
import com.coltware.airxmail.MailSender.SMTPSender;
import com.coltware.airxmail.MimeMessage;
import com.coltware.airxmail.RecipientType;
protected function send_plain_Mail():void
{
       var sender:SMTPSender = new SMTPSender();
       sender.setParameter(SMTPSender.HOST, "smtp.gmail.com");
       sender.setParameter(SMTPSender.PORT, 465);
       sender.setParameter(SMTPSender.AUTH, true);
       sender.setParameter(SMTPSender.USERNAME, "username");
       sender.setParameter(SMTPSender.PASSWORD, "password");
       var message:MimeMessage = new MimeMessage();
       var from:INetAddress = new INetAddress("wtf@gmail.com","from label");
       message.setFrom(from);
       var toRecpt:INetAddress = new INetAddress("abc@gmail.com","to label");
       message.addRcpt(RecipientType.TO, toRecpt);
       message.setSubject("Hello World");
       message.setTextBody("this is my first mail from flex");
       sender.send(message);
       sender.close();
}