This code send email two times but i want only once

              public void dbbackup_notify(String email,String data,String subject){
           String toEmails = email;
        Session session=Session.getInstance(props, new javax.mail.Authenticator() {
            protected PasswordAuthentication getPasswordAuthentication() {
                return new PasswordAuthentication(user, pass);
            }
          });

        Message message=new MimeMessage(session);
        try {
            message.setFrom(new InternetAddress(userid));

                message.addRecipient(Message.RecipientType.TO, new InternetAddress(toEmails));
                message.setSubject(subject);
                message.setText(data);
                message.setContent(data,"text/html");

                transport=session.getTransport("smtp");
                transport.connect(host,user,pass);
                transport.sendMessage(message,message.getAllRecipients());
                transport.close();

            System.out.println("Sent Successfully: "+ new Date());
        } catch (AddressException e) {

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

            e.printStackTrace();
            System.out.println("Don't Send Successfully"+ new Date());
        }

 }