If you are looking for ost to pst conversion tool, then try OST Extractor Pro. It can safely convert ost to pst and other file formats as well. The tool works both Mac and Windows. http://bit.ly/2l6GtPs
To import ost file in Outlook, you need to convert the OST data file into PST. You can convert ost file using 'OST Extractor Pro'. Read it more info. http://bit.ly/2l2jm8D
Here is solution for all these problems. Cannot start Microsoft Outlook. Cannot open the Outlook window. The set of folders cannot be opened. http://bit.ly/2l0P9Xr
You can convert ost files to pst in a smart way using 'OST Extractor Pro'. Recover all ost data and convert into file formats like *.pst, *.mbox, *.eml etc. http://bit.ly/2kZc8lN
For importing Mac Mail data into Mozilla Thunderbird, you need convert into Thunderbird supported file formats. You can try Mail Extractor Max for the same. http://bit.ly/2JiKtXz
Try OST Extractor Pro to convert ost to pst (for Mac & Windows Outlook), Apple Mail, Thunderbird, Postbox, MBOX & EML file formats. http://bit.ly/2M1B74d