The WorldGuard plugin must be installed on the server.
A plugin that deletes a region if the owners or participants of the region have not logged into the server for more than
5 days, you can specify your values in the config. If there are owners, or participants, on the server online, at least one participant, or owner, of the region, then the region will not be deleted.
(I don't know if any of you will find this plugin useful.)
Commands: /sacrreload - Reload the plugin.
Rights: sautocleanupregions.reload - Reload the plugin.