It is already possible with a new Email Campaigns module. You should create a template where filter orders from a month ago for example, and use {order_items} tag in the email body. Check this manual for more details:
http://www.viart.com/email_campaigns.html
The {order_items} tag is formed in template 'email_order_items.html' where you could edit the content and add a link to review tab of the purchased product, for example like this:
<a href="http://www.site.com/{item_url}&tab=reviews&eid={eid}">http://www.site.com/{item_url}</a>
Regards,
ViArt Team