WikiSandbox

public void sendMail(String toAddress, String fromAddress,String subject, String messageBody) throws IOException, ProtocolException, UnknownHostException {
        messageArea.setText("");
        printMessage("** Sending Mail Now **");
        printMessage("** From     : " + fromAddress);
        printMessage("** To       : " + toAddress);
        printMessage("** Subject  : " + subject);
        printMessage("** Message  : " + messageBody);
        printMessage("-----------------------------------------------");

        String messageRecv;
        // KL: Use your own ISP's SMTP server instead!!
        // String host = new String("mail.netvigator.com");
        String host = new String("smtp.myrealbox.com");
        Socket socket = new Socket(host, 25);
        //DataInputStream in = new DataInputStream(socket.getInputStream());
        BufferedReader in = new BufferedReader(
                        new InputStreamReader(socket.getInputStream()));
        PrintStream out = new PrintStream(socket.getOutputStream());
        messageRecv = in.readLine();
        printMessage(messageRecv);
        if (!messageRecv.startsWith("220"))
                throw new ProtocolException(messageRecv);

        while (messageRecv.indexOf('-') == 3) {
                messageRecv = in.readLine();
                printMessage(messageRecv);
                if (!messageRecv.startsWith("220"))
                        throw new ProtocolException(messageRecv);
        }

        //out.println( "HELO " + host );     out.flush();
        //messageRecv = in.readLine();  printMessage(messageRecv);

        //if (!messageRecv.startsWith("250"))
        //      throw new ProtocolException(messageRecv);
        out.println( "MAIL FROM: " + fromAddress ); out.flush();
        messageRecv = in.readLine();
        printMessage(messageRecv);

        if (!messageRecv.startsWith("250"))
                throw new ProtocolException(messageRecv);

        out.println( "RCPT TO: " + toAddress ); out.flush();
        messageRecv = in.readLine();

        printMessage(messageRecv);
        if (!messageRecv.startsWith("250"))
                throw new ProtocolException(messageRecv);

        out.println( "DATA" ); out.flush();
        messageRecv = in.readLine();

        printMessage(messageRecv);
        if (!messageRecv.startsWith("354"))
                throw new ProtocolException(messageRecv);

        out.println("From: " + fromAddress);
        out.println("To: " + toAddress);
        out.println( "Subject: " + subject + "\n" );
        out.flush();
        out.println("Comment: Unauthenticated sender");
        out.println("X-Mailer: SimpleSendMail");
        out.println("");
        out.println( messageBody );
        out.println(".");
        out.flush();
        messageRecv = in.readLine();
        printMessage(messageRecv);

        if (!messageRecv.startsWith("250"))
                throw new ProtocolException(messageRecv);
        out.println("QUIT");
        out.flush();
        in.close();

        printMessage("** Your mail has been sent.");
        socket.close();
        return;
}

public void printMessage(String str) {
        messageArea.append(str + "\n");
        return;
}