If you are finding best way to Transfer OST to Thunderbird. so you can try the best eSoftTools OST to MBOX Converter tool. This tool is compatible with all Windows OS - XP, 7, 8, 10, and onward and supports all editions of MS Outlook 2003, 2007, 2010, 2013, 2016. This tool instantly recover OST file to PST without making any internal changes like date, subject, attachment, and others). This tool converts the OST file into EML format without the presence of this Outlook.
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