wp get user email by id code example
Example: how to fetch all user data form user in wp
<?php
$users = get_users( array( 'fields' => array( 'ID' ) ) );
foreach($users as $user){
echo"<pre>";
print_r(get_user_meta ( $user->ID));
echo"</pre>;
}
add_shortcode('userget','getuser');
?>