Blog cover in email problem

Hi, with the hack doing by one of our colleges we try to insert post cover in emails template but for some reason it doesn´t appear

The hack code is :

// custom hack for display post cover in email

			$this->normalizeBlogImage();

			$mm = EB::mediamanager();



			$url = $mm->getUrl($this->image);

			$path = $mm->getPath($this->image);



			$exists = JFile::exists($path);



			if ($exists) {



				$uri = JURI::getInstance();

				$scheme = $uri->toString(array('scheme'));

				$scheme = str_replace('://', ':', $scheme);



				$image = $scheme . $url;		

				

				

				$blogImage = $image;

			}

			// end customisation

And in the post.new.php overrides has :

                    <div align="center" class="img-container center  autowidth  fullwidth " style="padding-right: 0px;  padding-left: 0px;">

<!--[if mso]><table width="100%" cellpadding="0" cellspacing="0" border="0"><tr style="line-height:0px;line-height:0px;"><td style="padding-right: 0px; padding-left: 0px;" align="center"><![endif]-->

  	<?php if ($templatePreview) { ?>

		<img class="center  autowidth  fullwidth" align="center" border="0" src="https://site.com/images/placeholder.gif" alt="Image" title="Image" style="outline: none;text-decoration: none;-ms-interpolation-mode: bicubic;clear: both;display: block !important;border: 0;height: auto;float: none;width: 100%;max-width: 498px" width="498">

	<?php } else { ?>

		<img class="center  autowidth  fullwidth" align="center" border="0" src="/<?php echo $blogImage;?>" alt="Image" title="Image" style="outline: none;text-decoration: none;-ms-interpolation-mode: bicubic;clear: both;display: block !important;border: 0;height: auto;float: none;width: 100%;max-width: 498px" width="498">



	<?php } ?>

<!--[if mso]></td></tr></table><![endif]-->

</div>

Can you give a hand ?

Thanks.