function drupaltest_menu() {
$items['drupaltest-site'] = array(
'title' => 'test',
'description' => 'just some description',
'page callback' => 'drupaltest_page',
'access callback' => TRUE,
);
return $items;
}

function drupaltest_page() {
$header = array(
array('data' => t('username')),
array('data' => t('email')),
array('data' => t('permissions')),
);

$users = entity_load('user');
$items = array();
foreach ($users as $user) {
$items['items'][] = t('Usermail:' . $user->mail . ' , ' . 'Name:' .  $user->name);
$content = theme('item_list', $items);

$block['table'] = array(
'#theme' => 'table',
'#header' => $header,
'content' => $content,
);
}

function drupaltest_permission()
{
return array(
'edit my settings' => array(
 'title' => t('Edit My Settings'),
 'description' => t('Edit My Settings Page'),
),
);
}