I have used this tool for some time now, it really works very well! The interface could be improved but that's just nitpicking about something minor - not even worth mentioning in my opinion as they are looking at other features first anyway (i think). It does exactly what you need from an e-discovery perspective; recover deleted or corrupted Exchange mailbox files quickly without having access to original data sources like Outlook backup file folders etc., so no risk of loosing important evidence due to accidental deletion by user error/malware attack / system crash, loss during transport between storage media devices such as hard drives & external USB storages including cloud services if applicable.