You want to convert the entire OST to EML file formats. I suggest the simple
WholeClear OST to EML Converter Software, which is an expert solution for
converting OST files to PST format. It is easy to use for all users without technical knowledge. You can run this tool on any Windows OS version, like 11, 10, 8, 7, Vista, XP, etc. It is the best way to convert multiple OST files to EML format without losing any data. For users who don't know much about technology, it's easy to use. There are versions of MS Outlook 2021, 2019, 2016, 2013, 2010, and more that it works with. A lot of OST files can be converted to EML files without using Outlook. You can also get the test version of the software for free and look at its features. It's easy for users to convert OST files to EML files and open them in any email client. It works with all email clients that accept EML, like Apple Mail, eM Client, WLM, and more.