I want to attach invoice pdf to the invoice mail, I followed the link and override the email functions.

First Override the app/code/Mage/core/Model/Email/Template/Mailer.php like,

  1. Adding protected $pdftemplate;
  2. Overriding the send() function,

    if($this->pdftemplate){ $pdftemplate = $this->variable; }else{ $pdftemplate = Mage::getModel('core/email_template'); }

  3. Adding attachment function at the end of the class,

    /** Add Attachment**/

    public function addAttachment(Zend_Pdf $pdf, $filename){
        $file = $pdf->render();
        $this->pdftemplate = Mage::getModel('core/email_template'); 
        $attachment = $this->pdftemplate->getMail()->createAttachment($file);
        $attachment->type = 'application/pdf';
        $attachment->filename = $filename;

Second I override the app/code/Mage/Sales/Order/Invoice.php, sendEmail() function,

$mailer = Mage::getModel('core/email_template_mailer');
        $pdf = Mage::getModel('sales/order_pdf_invoice')->getPdf(array($this));

But the pdf is not attached. I don't know what to do next. I hope someone will point me the issue.


1 Answer 1


you have to try extension first, then if you like you can customize it: https://marketplace.magento.com/fooman-fooman-emailattachments.html

Feature List

  • Automatically attach a copy of Order/Invoice/Shipment/Credit Memo pdf documents (with or without comments) to Order/Invoice/Shipment/Credit Memo emails
  • Automatically attach your Terms and Conditions (as html/text file) to Order/Invoice/Shipment/Credit Memo emails
  • Automatically attach any pdf document to Order/Invoice/Shipment/Credit Memo emails (for example, your return policy, a coupon or voucher, or your latest newsletter)
  • Create an Order Confirmation pdf document from the Order Overview screen or individual Order View page
  • Print Order Confirmation pdf documents for multiple orders in bulk from the the Order Overview screen
  • Developer bonus - if you write your own extensions, you can hook into the email sending process into the events added by this extension

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