a href mailto not working

Hi @danfickle

Could you provide support for links with mailto?

````
<html>
<head>
<style>
</style>
</head>
<body>

user@gmail.com

<br /><br />

<a href="mailto:user@gmail.com">Send a message!</a>

</body>
</html>
````

I would like to customize text on email links.