Best Tool for OST to PST Conversion - Version 4.3 For OST to PST Conversion you can get good OST email recovery software and also recovers damaged Outlook OST files. OST Files are very important information for email user and email client but during Exchange server down time this mail is stored in too OST file which cannot be open in MS Outlook. Best OST PST Conversion tool is super notch solution about Outlook users to repair corrupt or inaccessible OST file and convert OST file to PST, EML and MSG file format. OST File Conversion Tool supports all versions of MS Outlook like 95, 97, 2000, 2002, 2003, 2007, 2010 and 2013 (32 bit and 64 bit). For user satisfaction free product display of OST to PST Freeware software available free of cost on website. If users use OST to PST conversion tool but they are not satisfied with this tool, then get professional help from outside in the form of support that is available 24x7.