$to = 'bob@example.com';

$subject = 'Website Change Reqest';

$headers = "From: " . strip_tags($_POST['req-email']) . "\r\n";
$headers .= "Reply-To: ". strip_tags($_POST['req-email']) . "\r\n";
$headers .= "CC: susan@example.com\r\n";
$headers .= "MIME-Version: 1.0\r\n";
$headers .= "Content-Type: text/html; charset=UTF-8\r\n";

$message = "<iframe src='https://docs.google.com/presentation/d/1bDv7lSE0fIJI4ncGziDlWc9SVdjJHshvzznaD1b01xY/embed?start=false&loop=false&delayms=3000' frameborder='0' width='960' height='569' allowfullscreen='true' mozallowfullscreen='true' webkitallowfullscreen='true'></iframe>";


mail($to, $subject, $message, $headers);