Using the Marketing automations in Shopify, you can send a thank you message to subscribers after their review is published.
To send a thank you message after a review is published:
From your Shopify Admin, navigate to Marketing, then Automations.
Click View templates.
Click Create custom automation.
Click Select a trigger.
From the Select trigger list, select Seguno Reviews, then Product review published.
From the Start when node, click the plus sign, select action.
From the Select action list, click Seguno email, then Send marketing email.
Click Select template.
Select a template and customize the email.
Once the email is customized, click Exit.
From the workflow, click Turn on workflow.