I have created a New Edge portal, and an API product. I have set developer approval to manual, and set an email address for notification of new developers awaiting approval. That appears to work correctly. But when I set an API product for manual approval, no notification email is sent. This means a developer could wait indefinitely or have to complain about not having approval for an API.
There appears to be a way to do this with Drupal portals: What is the best way in Dev Portal to apply a Workflow for Manual API Key Approval? but I don’t see how to do this in a New Edge portal.