how to attach multiple files to email client in android

I am using Intent .ACTION_SEND to get default email client. It works fine but now i need to attach more than one file to email.

email.putExtra(android.content.Intent.EXTRA_STREAM,...) attaches only last uri added to it.

So can I attach multiple files? I think this can be done by using Intent.ACTION_SEND_MULTIPLE. Here is the code I am trying:

String uri=getScreenShot();

Intent email = new Intent(android.content.Intent.ACTION_SEND);
            email.setType("application/octet-stream");
            email.putExtra(Intent.EXTRA_STREAM, Uri.parse(uri));
            email.putExtra(android.content.Intent.EXTRA_STREAM, Uri.parse("file:"+csvpath));
            alert.dismiss();
            ctx.startActivity(Intent.createChooser(email, "Send mail..."));

Thanks in advance.