This mod will allow you to automatically send follow up email to your client.
For completed and shipped orders - follow up e-mail can be setup for delivery in X weeks or X days.
You can config a time period say a couple weeks after an order is shipped, to automatically generate an email to thank the customer again and asking if they would like to review the product or tell you about their experience,with a link and product picture which will link to the product review page.
From the admin screen, you can set the time period and the order condition to send the email as well subject, body, closing and sender.