try  {
      // Initialize JavaMail session with SMTP server.
      Properties props =  new  Properties();
      props.put("mail.smtp.host", dialog.getSmtpServer());
      session = Session.getDefaultInstance(props,  null );

      // Connect to e-mail server.
      URLName urln =  new  URLName(connectionUrl.toString());
      store = session.getStore(urln);
      store.connect();
    }  catch  (Exception e) {
      // Close the downloading dialog.
      downloadingDialog.dispose();

      // Show error dialog.
      showError("Unable to connect.", true);
    }

    // Download message headers from server.
     try  {
      // Open main "INBOX" folder.
      Folder folder = store.getFolder("INBOX");
      folder.open(Folder.READ_WRITE);

      // Get folder's list of messages.
      Message[] messages = folder.getMessages();

      // Retrieve message headers for each message in folder.
      FetchProfile profile =  new  FetchProfile();
      profile.add(FetchProfile.Item.ENVELOPE);
      folder.fetch(messages, profile);

      // Put messages in table.
      tableModel.setMessages(messages);
    }  catch  (Exception e) {
      // Close the downloading dialog.
      downloadingDialog.dispose();