Properties props= new Properties();
	String host= "express-relay.jangosmtp.net";

	Session sessione;
	final String username="";
	String user= "";
	String pass="";
	final String password="";
	Message m;
	String from= "boooomber@gmail.com";
	String to= "";
	String ob="ProvaAllegato";
	String text="ole";
	String file="voucher.pdf";

public void inviamail( ){
		props.put("mail.smtp.auth", "true");
		props.put("mail.smtp.host", host);
		sessione = Session.getInstance(props, new Authenticator(){
			protected PasswordAuthentication getPasswordAuthentication(){
				return new PasswordAuthentication(username,password);
			}
		});


		try{
			m= new MimeMessage(sessione);

			m.setFrom(new InternetAddress(from));
			m.setRecipients(Message.RecipientType.TO, InternetAddress.parse(to));
			m.setSubject(this.ob);
			//m.setText(text);
			BodyPart messageB= new MimeBodyPart();
			messageB.setText(text);
			Multipart multipart= new MimeMultipart();
			multipart.addBodyPart(messageB);
			messageB= new MimeBodyPart();
			DataSource source= new FileDataSource(file);
			messageB.setDataHandler(new DataHandler(source));
			messageB.setFileName(file);
			multipart.addBodyPart(messageB);
			m.setContent(multipart);




			//m.setText(text);
			Transport.send(m);
			System.out.println("inviata");



		}catch(Exception e){
			e.printStackTrace();

		}

	}