- Do you want to convert Outlook Ost to PST files but are having trouble figuring out how to do it? Then try the Ost to Pst converter software from eSoftTools. The OST file converting programme will finish the conversion process in the shortest time possible. Orphaned OST files can be converted into Outlook PST files with this utility. There is a free demo version of this application that you can use to test it out and see how it functions.
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