[WordPress] Concise shortcode function for an anti-spambotted email link in WordPress. Parameters for class, style (check for support in your wysiwyg editor!) and title attributes. Parameters before, after, before_text and after_text for most concise control of the final HTML output.

wp-shortcode-email-link.php

<?php 
/**
 * WordPress shortcode for e-mail link
 * [email_link address="user@domain.tld" text="E-Mail me!"]
 * 
 * @param address 	(required) E-Mail address
 * @param text 		(required) Link text
 * @param before 	(optional) HTML to go before the <a> tag
 * @param after 	(optional) HTML to go after the </a> tag 
 * @param before_text 	(optional) HTML to go before the link text
 * @param after_text 	(optional) HTML to go after the link text 
 * @param class 	(optional) class attribute for <a>
 * @param style 	(optional) style attribute for <a>
 * @param title 	(optional) title attribute for <a> 
 * 
 * @return 		HTML <a> tag with specified e-mail address, text and attributes
 */
add_shortcode( 'email_link', 'gp121231_shortcode_mailto' );
function gp121231_shortcode_mailto( $atts ) {
	extract( shortcode_atts( 
                  array(
			'address' 	=> 'mailto:enter@address.please'
			,'text' 	=> '--Please enter a link text!--'
			,'after' 	=> ''
			,'before' 	=> ''
			,'after_text' 	=> ''
			,'before_text' 	=> ''
			,'class' 	=> ''
			,'rel' 		=> ''
			,'style' 	=> ''
			,'title' 	=> ''
			), 
                  $atts) );

	$address  = antispambot( $address );
	$text	= antispambot( $text );
	$class	= $class ? ' class="' . $class . '"' : '';
	$title	= $title ? ' title="' . $title . '"' : '';
	$rel	= $rel ? ' rel="' . $rel . '"' : '';
	$style	= $style ? ' style="' . $style . '"' : '';
	
	$output  = $before . '<a href="mailto:';
	$output .= $address . '"';
	$output .= $class . $title . $style . '>';
	$output .= $before_text . $text . $after_text;
	$output .= '</a>' . $after;
	
	return $output;
}