I reformatted my HDD, but forgot to make backup of my .pst files. I need to recover them.

Recovery ToolBox for Outlook is designed to recover data from Microsoft Outlook pst files

> reading the corrupted pst file

> identifying and recovering data from this pst file

> saving the recovered data to one or several new .pst files

Source: http://www.outlook.recoverytoolbox.com/

• Marked as answer by Frank JAckon Thursday, January 30, 2014 5:12 PM

You may use a tool called Advanced Outlook Data Recovery to scan the whole formatted hard disk you used to store your PST file in the past. The tool will collect all the Outlook data on the disk, and recover them and output a new fixed PST file. You need to make sure the fixed PST file is outputted to an external USB drive, to prevent it from overwriting the existing hard disk data.

You can make autobackup of your data and to save it on storage device. It is more reliable decision:)

You can also try user-friendly tool as well known Kernel for Outlook PST Repair to effectively recover your all Outlook PST  file. The tool is also well supported by all MS Outlook and Windows OS version. Get info, visit to: http://www.fixpst.org

• Edited by umarsiddiq 45 minutes ago

You can also try user-friendly tool as well known Kernel for Outlook PST Repair to effectively recover your all Outlook PST  file. The tool is also well supported by all MS Outlook and Windows OS version. Get info, visit to: http://www.fixpst.org

• Edited by umarsiddiq Monday, February 02, 2015 11:07 AM

You can quickly recover backup of your PST file with the help of user-friendly tool http://www.corruptpstfile.org

I have already used this tool and I was really satisfied. So I would highly recommended the same.