If you need to recover a deleted OST file, I know one will look for recovery software, so I have a solution for you. You can use SysInspire OST to PST Converter Software to recover an OST file. It can simply recover your OST file and resolve any OST file problems. It can also convert OST files to PST and a variety of other file formats including HTML, MBOX, vCard, Office 365, ICS, MSG, EML, EMLX, HTML, and so on. This software has very simple processes, and it does not require Outlook. Click on the link below to understand more about the software.