ATS OST to PST Converter is a great solution for converting OST mailboxes to PST. The OST data files change to the PST, EML ,MSG,MBOX,EMLX file formats when the server crashes, becomes corrupted and various other problems occur. With the converter OST file to PST for Exchange 2019, 2016, 2013, 2010, users can convert OST files to PST files. It was tested with a 650 GB OST file and worked very well to export an OST file to PST. Try the free demo version of the converter and convert 30 emails for free also.