spam.php

<?php
$users = json_decode(file_get_contents('https://api.github.com/repos/:user/:repo/stargazers'), true);
foreach ($users as $user) {
  $user = json_decode(file_get_contents($user['url']), true);
	if (!empty($user['email']) {
		mail($user['email'], 'Can has mail', $message);
	}
}