If you must send this to all you can try adding the text to /email/email_template_product_notification.html
Or create your own custom email
Code:
<!-- Content Section -->
<div class="content">
<div>Dear $EMAIL_CUSTOMERS_NAME,</div>
<div>$EMAIL_TEXT_ORDER_NUMBER</div>
<div>$EMAIL_TEXT_INVOICE_URL</div>
<div>$EMAIL_TEXT_DATE_ORDERED</div>
<div>$EMAIL_TEXT_STATUS_COMMENTS</div>
<div>$EMAIL_TEXT_STATUS_UPDATED</div>
<div>$EMAIL_TEXT_STATUS_LABEL</div>
<div>$EMAIL_TEXT_STATUS_PLEASE_REPLY</div>
<div>$EMAIL_STORE_NAME</div>
</div>
HERE
<!-- Footer Section -->
<div class="footer">