We have Office 2013 with one Exchange mailbox (powered by Office 365).
However, due to some issues with importation and whatnot, we pretty much have triplicate of all messages due to errors on our part.
We have tried to use the clean up functionality built into Outlook, however, it seems to get rid of only a few and does not go through the entire box/folder and get rid of all the multiple copies. (You can clearly see in each box multiple messages with multiple copies -- same sender, content, and time stamp.)
Is there a good way to do this without having to buy a program or do we have to bite the bullet and do it.