i use phpmail http://phpmailer.worxware.com/ class to send the form information, there is an image in the form like this

Code:
<form.....>

<div><img src="<?php echo $this->helper('catalog/image')->init($_product, 'small_image')->resize(42, 42); ?></div>


</form>
how to send the image to the email box? thank you.