You can use FixVare OST to MBOX Converter to import the OST file to MBOX format. This is an effective and dependable solution you’d use to migrate emails from an OST file to an MBOX file. First, you should open the application for the conversion and then the application provides access to a known OST file from which you select the OST file you want to convert. This application can add as many OST files as you select for conversion to MBOX files. After the conversion the new MBOX file would allow you to import that file into any MBOX email client such as Mozilla Thunderbird Apple Mail and Eudora. It is a straightforward process that does not require the user to be technical. Whether you’re a beginner with email or a professional, this easily achieved process should relive the burden of the solution from the user.