PDS Free Software Convert OST to PST software quickly recover data from OST File & convert offline OST to PST with full attachments- Inbox, Outbox, Sent Items, Deleted Items, Draft, Journals, Tasks, Calendars, Notes, & Contacts. This software let you restore OST File into PST, EML, MSG and HTML formats. It also Split large PST File into Small PST File (1 to 5 GB). It works on OST versions-5.0/5.5/2000/2003/2007/2010/2013