I like that you can search for specific files or folders within your Outlook mailbox (in addition to searching through emails).
It's also an easy way of organizing all my email correspondence so it makes finding things much easier! There are some downsides too - sometimes when opening multiple windows at once there will be gaps between them which make scrolling down pages difficult. Also not sure about mobile app but maybe its something worth looking out for? The benefits far outweigh any faults with explorermax. We have been able to organize our inboxes more effectively as we now know where everything goes rather than just relying on sorting emails via date received etc.