Overview on PST File: PST or personal storage table file is an open proprietary file format, which is used for stories copies of messages, calendar, tasks, contacts, and other items of Microsoft email applications like MS Exchange client, Outlook, and Windows Messaging. There are many extensions of a OLK file, which can be read and viewed for extracting information from OLK files. It only stores corresponding data of message header. A client operates backend OLK14MESSAGE file, when mail content is read on the client end by a user.
Overview on OLK file: As a part of Microsoft Office Suite 2011, Outlook was introduced as an email application for Mac operating system.