I am personally making my own solution for that kind of task. Using REST is giving you a lot of options. First of all you need to define what is a "Unused space" and then build a "script" based on this. Few examples - https://developer.atlassian.com/confdev/confluence-rest-api/confluence-rest-api-examples
If you don't want to play around with "scripts" there is always an option to use a plugin for example Archiving Plugin for Confluence - https://marketplace.atlassian.com/plugins/com.midori.confluence.plugin.archiving
It depends do you want to pay for it or spend some time and build your own solution.
Over the next several weeks we'll be sharing some of our Getting Started guides here in the community. Throughout this series of posts, we'd love to hear from customers and non-customers ab...
Connect with like-minded Atlassian users at free events near you!Find a group
Connect with like-minded Atlassian users at free events near you!
Unfortunately there are no AUG chapters near you at the moment.Start an AUG
You're one step closer to meeting fellow Atlassian users at your local meet up. Learn more about AUGs