Best OST to PST Software that recovery of corrupted OST File and Convert OST to PST Outlook file. You can extract OST messages and convert all of them into PST, EML, MSG and HTML format. Before saving OST as PST, you can split large size of PST file into Small PST file upto 5 GB it is best option to makes PST file small. OST to PST Converter Software helps to recovery OST File and convert OST file to PST file.