OST recovery with the strong conversion from eSoftTools. This utility enables the conversion of OST files into numerous other file formats, such as PST, EML, EMLX, Office 365, Yahoo Mail, Gmail, MSG, and others. It can convert between more than 10 different file types. This utility supports batch and one-by-one file format conversions. It is straightforward to export contacts from Outlook OST to vCard using this free software.