PHP: sendMail

sendMail.php

<?php
function sendMail($to, $subject, $message, $from = 'From: no.reply@dot.com', $isHtml = true) {
    
    $from .= "\r\n"; // we make sure we have an endline
	if($isHtml) {
		$from .= "MIME-Version: 1.0 \r\n";
        $from .= 'Content-type: text/html; charset=iso-8859-1' . "\r\n";
	}
	$from .= 'X-Mailer: PHP/'.phpversion()."\r\n";
    
	return mail($to, $subject, $message, $from);
    
}