Email Short Code

emailshortcode.php

// Hide Email from Spam Bots using antispam bot http://codex.wordpress.org/Function_Reference/antispambot

function HideMail($atts , $content = null ){
	if ( ! is_email ($content) )
		return;

	return '<a href="mailto:'.antispambot($content).'">'.antispambot($content).'</a>';
}
add_shortcode( 'email','HideMail');

All the above short code to your function file.

Now all you have to do is wrap the email address in [email]robert@example.com[/email] for it work.

This short code updated Oct/2013 now uses the WordPress antispambot function reference. http://codex.wordpress.org/index.php?title=antispambot

I have forked your shortcode here: https://gist.github.com/4235056 and made some important improvements to it:

• using WordPress coding standards
• removing the image in the link, that seemed very specific to the Robert's use case and not general use
• adding validation that the passed string in $content is an email address, and if not, just return out of the function, avoiding potential issues if it wasn't an email address
• added proper output escaping to the link, for security reasons