This is opencart 2 guides to send an email when reviews are given to the product. Changes to be done in the module's product.php is shown in the following images
Likewise, we have to change the product.tpl, type the code for the form as per your need
Now to the javascript part of the product.tpl which pass the data to the model and return whether the review is successfully added or not.
We hope you will get it because writing a post and long stories I feel bored just post things that we have done and shown you the logic we used in opencart to send mail to the specified mail.
We have not focused on the languages so sorry for that as well will update this post when we will get the time cheers.
