If you want to import OST files into Gmail, I suggest to you the most requested third-party tool: eSoftTools OST Converter software. A live preview feature is available in this software before the conversion. which you can easily check and confirm the conversion format. It does not require the installation of MS Outlook or Exchange Server. It can support all versions of windows like 2000, 2003, 2007, 2010, 2013, 2016, and 2019. That can migrate the OST file into the PST, HTML, MBOX, EML, EMLX, Yahoo, Gmail, Office365, vCard, etc.
About Know More: Import OST files into Gmail
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