<?php
// multiple recipients
$to = '
[email protected]' . ', '; // note the comma
$to .= '
[email protected]';
// subject
$subject = 'Birthday Reminders for August';
// message
$message = '
<html>
<head>
<title>Birthday Reminders for August</title>
</head>
<body>
<p>Here are the birthdays...