If are looking for a tool that can recover your Journal and Task data from OST files then you can use
Enstella OST TO PST Converter Software. Also convert your OST file to PST, EML, MBOX, ICS, & other file
formats using Outlook's built-in import-export option or a reliable use of this tool. You can repair and
recover OST files here and errors & corruption in corrupt files also be repaired with this tool in just a few
clicks.
Read More -Recover Journal and Task from OST File