No one likes registering for a new account and asking your client to do so can be challenging.
Now you can share your preview with a reviewer without needing them to register for an account!
Just copy the public URL and then set the permissions for anyone that has access to the link:
Viewer – This is just read only access.
Editor – Reviewers will be allowed to edit any objects (add/edit/delete ads, keywords, etc)
Commenter – Reviewers will only be able to leave comments on objects