Open Send email intent in android

gistfile1.java

Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("text/html");
intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"to@example.com"});
intent.putExtra(Intent.EXTRA_SUBJECT, "the subject");
intent.putExtra(Intent.EXTRA_TEXT, Html.fromHtml("the content"));
intent.putExtra(Intent.EXTRA_STREAM, Uri.parse("file:///sdcard/file.ext"));
startActivity(intent);