How to find all noindex sites (that discourage search engine indexing) in a WordPress multisite with Beyond Multisite?

With the Cleanup module of Beyond Multisite, we can find all sites that discourage search engine indexing. We will use the preview site deletion button in the site deletion form.

Follow these steps:

1. From the Network Admin Screen click on Dashboard -> Network Cleanup
2. Scroll down to the Delete Sites section and set the form to these settings on the picture below:
   1. Set Attributes to Not public
      
   2. Set Skip previously cancelled to No
   3. Set Deletion time and cancellation to No cancellation. Execute now!
3. Click Preview Site Deletion

Now you should see a list of all sites that are not indexable by search engines.