The GainTools MBOX to PST Converter is a tool that can convert MBOX files into Outlook PST files. It works with Mozilla Thunderbird, Mac Mail, and other email apps' MBOX files. There is no loss of email data during the conversion because of this tool. Not even files or work are lost. It saves users time and work by letting them move many things at once. It is simple to use, compatible with all versions of Windows and Outlook, and best for people who need to move from email clients that use MBOX to Outlook. You can get a free trial version on their website.