WholeClear OST to MBOX Converter Software is a 100% safe and secure solution that can easily convert Outlook OST files to the MBOX format. The tool can open OST files made by any version of MS Outlook, such as Outlook 2019, 2016, 2013, etc. It converts OST files made in Exchange Server, IMAP, and Office 365 settings well. It has user-friendly software, so all users can easily use it. The software works with Windows OS 11, 10, 8, and 7, and the MBOX files it creates can be opened in Thunderbird, Apple Mail, Eudora, SeaMonkey, and other email clients that accept MBOX files.