We have over 40 pages of external collaborators whose invitations date back to 6+ years ago. What I'm wanting is a report that shows me the last time they accessed a document/ file/ folder that belongs to us. From a user perspective it makes sense to have a report that has this capability. We have the collaborators report you can run but it's not really helpful because I'm not able to see who is actively accessing our files and who isn't. I need to go through and clean out any outdated external collaborators.
Another option would be to set a rule that if they haven't accessed content in ___ amount of time they will automatically have their collaboration revoked. From what I understand this is also not an option.
What would be the best way to manage/ clean out external collaborators?