PfRep's helps the cleaning of Exchange Public Folders before they are migrated to SharePoint. The tool can also be also used for everyday cleaning operations as well. PfRep helps to understand the usage statistics of Exchange Public Folders by showing the folders with the dfferent shades of red in the hierarchy. Light red indicates that the folder is not used for a long time and as it gets more red, it means that it's more frequently used. This can help businesses or departments within large organisations to easily understand which folders are used and which are not.
At the end of the day, this can save a lot of time to understand which data to be kept and thus, saving storage costs when migrating data to an expensive storage into SharePoint. To keep your data organised, you can then consider retention policies in its new location - after migration.