If you want a professional utility to convert OST to PST files effortlessly, then outlook users can use the osttopstapp OST to PST Converter Tool on your Windows Systems. Converting your OST file into PST, EML, EMLX, MSG, MBOX, etc. This tool is very useful for repairing my OST file using this tool and I am comfortable with the working of it. This is an error-free application, it will not damage or make changes inside the OST file data in the process of conversion, and you will get all the data safe in .pst format. This app some different platforms like Eudora, SeaMonkey, PocoMail, Entourage, Postbox, Mulberry, Webmail, etc. Users will have a free demo trial for the repair of a few OST files. Operate this utility on Windows OS. The tool offers a free demo to convert some OST to PST format effortlessly.