It's easy for me since I am not familiar with this software but if you are then it will be really difficult as there isn't much information available online or in video tutorials that could help one get started using such an application.
But once again its free so no harm done! Nothing at all i can say about this tool which would make any difference because of lack of info from others who have used them before me. So far nothing has been reported by anyone else regarding their experiences when they use these tools hence my experience remains same too. What we did was extract our emails into PST files after upgrading our Exchange Server 2010 server to 2013 version thus causing issues while working offline due to limited connectivity during office hours.