Twig macro converting email addresses in text into links secured from spambots. More info: http://craftsnippets.com/articles/converting-email-addresses-into-links-using-twig-macro

emailLinks.twig

{% macro emailLinks(text, class) %}
{# v1 #}
{% spaceless %}
{% set text = text|replace('/([a-zA-Z0-9_.+-]+)+@([a-zA-Z0-9-]+.[a-zA-Z]+)/', '<a ' ~ (class ? 'class="' ~ class ~ '" ') ~ 'href="mailto:'~ '\\1&#64;\\2' ~'">'~ '\\1&#64;\\2' ~'</a>') %}
{{text|raw}}
{% endspaceless %}
{% endmacro %}