Intent sendIntent = new Intent(Intent.ACTION_SEND);
          sendIntent.setType("video/3gp");
          sendIntent.putExtra(Intent.EXTRA_SUBJECT, "Video");
//         sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file://mnt/sdcard/dcim/100MEDIA/VIDEO0006.3gp"));
          sendIntent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file//"+Environment.getExternalStorageDirectory()+"/DCIM/100MEDIA/VIDEO0006.3gp"));
          sendIntent.putExtra(Intent.EXTRA_TEXT, "Enjoy the Video");
          startActivity(Intent.createChooser(sendIntent, "Email:"));