static public void sendEmail(Activity activity, String body, String subject) {

        String email = "";

        Intent intent = new Intent(Intent.ACTION_SENDTO);
        intent.setData(new Uri.Builder().scheme("mailto").build());
        intent.putExtra(Intent.EXTRA_EMAIL, new String[]{email});
        intent.putExtra(Intent.EXTRA_SUBJECT, subject);
        intent.putExtra(Intent.EXTRA_TEXT, body);

        ComponentName emailApp = intent.resolveActivity(activity.getPackageManager());
        ComponentName unsupportedAction = ComponentName.unflattenFromString("com.android.fallback/.Fallback");
        if (emailApp != null && !emailApp.equals(unsupportedAction))
            try {
                Intent chooser = Intent.createChooser(intent, "Send email with");
                activity.startActivity(chooser);
                return;
            } catch (ActivityNotFoundException ignored) {
            }

        Toast.makeText(activity, "Couldn't find an email app and account", Toast.LENGTH_LONG).show();
    }