Don't haveany idea about the best tool to do the conversion. Don't worry I have a
solution. The tool is highly recommended by most IT professionals is vMail OST
to PST Converter this tool has very excellent features that make it the best
and unique among all the available software. With the help of this Convert OST
to PST tool, you can convert files of any size there is no size limitation in
this software. You can also directly export the recovered files into Office 365
and Live Exchange Server as this tool also support cloud-based applications.
This tool support formats like PST, EML, MSG, vCard, vCal, EMLX, and MBOX
without loss of any email data.
Free to fix-https://www.vsoftware.org/blog/fix-error-have-been-detected-in-ost-file.html