Need to convert Outlook OST files to PST files? Then, download and run
MacMister OST Converter for Mac Tool which helps users to bulk convert OST files to PST files in one go with entire mailbox information. One can effortlessly migrate single or multiple OST files/folders into various different file formats with all email attributes. This works flawlessly with all macOS, Win OS, as well as Outlook versions.
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https://www.macmister.com/blog/convert-ost-to-pst-without-outlook/