Whenever you need to recover OST file you can use SysInspire OST to PST Converter software. It can convert OST file to PST and 12+ OTHER file formats. It has many smart features that help to easily OST conversion. It's a bulk conversion option that you can use to convert multiple OST file at once and convert only that emails that you want to convert. And the best thing is that you can use this software without Outlook. You can know additional information about the software by clicking the link given below.