If you are looking for a method to open Outlook OST offline in Outlook? Try OST to PST Converter software that helps you to convert multiple Outlook OST files to PST file format in Outlook 2019, 2016, 2013, and etc. It is a very simple GUI, anyone can easily handle and works with this software without any technical help. It maintain all the folder structure without any changes and data loss. It allows you to batch open Outlook OST offline in Outlook without Outlook installation. It supports all the latest and below versions of MS Outlook and Windows OS including Windows 11.