You need to configure SMTP. Once this is configured correctly, whoever gets added to a review will receive an email notification.
If this answer was helpful, please allow me to ask you to mark my answer as accepted in order to have it in the top of the thread, also helping other customers.
Thanks in advance!
Update: Our AMA with @Serhat Can is complete! Thank you everyone for taking the time to write your questions and participate, you are the folks that make the community enriching and fun! If...
Connect with like-minded Atlassian users at free events near you!Find an event
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no Community Events near you at the moment.Host an event
You're one step closer to meeting fellow Atlassian users at your local event. Learn more about Community Events