Example how to integrate an EmailService into the ArticleService

Module.php

<?php

namespace MyEmailThingy;

class Module
{
    public function onBootstrap($e)
    {
        $app = $e->getApplication();
        $em  = $app->getEventManager();
        $sem = $em->getSharedManager();

        $sm  = $app->getServiceManager();
        $listener = $sm->get('MyEmailThingy\Listener\EmailSendingListener');

        $sem->attach('Soflomo\BlogAdmin\Service\Article', 'create.post', array($listener, 'sendEmail'));
    }
}