I am wanting to have the ability in the admin panel to send a newsletter to a test email address so I can see how it looks in different email clients. So I found a post that says to do the below. However my issue is it does not seem to work as once I add a newsletter to the queue I do not have any option to indicate it should go to a "test" email user.
the post I found said to Go to /app/code/Mage/Newsletter/Model/Queue.php
Modify the method getSubscribersCollection() around line 126 to:
$this->_subscribersCollection = Mage::getResourceModel('newsletter/subscriber_collection') ->addFieldToFilter('subscriber_email', 'firstname.lastname@example.org') ->useQueue($this);