Intent i = new Intent(Intent.ACTION_SEND);  
      //i.setType("text/plain"); //use this line for testing in the emulator  
      i.setType("message/rfc822") ; // use from live device
      i.putExtra(Intent.EXTRA_EMAIL, new String[]{"kalaiselvan.ace@gmail.com"});  
      i.putExtra(Intent.EXTRA_SUBJECT,"kalai-droid");  
      i.putExtra(Intent.EXTRA_TEXT,"SampleTest");  
      startActivity(i);