OST Viewer

A free tool to view any OST files

Recovery Toolbox for Outlook

4.4 (18)
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How to view the contents of an OST file

If you need to view the data stored in an OST file for free, you can do it in just a few simple steps. You don’t need Outlook, Office365, Exchange Server, or Windows Domain Controller. This is what you need:

  1. Download, install, and run Recovery Toolbox for Outlook
  2. Select OST file on the first page of Recovery Toolbox for Outlook
  3. Choose a conversion mode (or restore if the OST file is damaged)
  4. Get access to folders, letters, contacts, and more on the preview page

This tool for viewing OST files can read and display the contents of working and damaged OST files for free without using Outlook, Outlook 365, Outlook for MAC, Exchange Server, or Windows Domain Controller.

Key advantages of Recovery Toolbox for Outlook:

  • Friendly and straightforward tool interface when viewing OST files
  • View letters, messages, notes, appointments, and other items
  • Sort data by different fields: From, to, subject, date, and others
  • Inspect damaged OST files
  • Open and read old OST ANSI format files for Outlook 97-2003
  • View OST files of the new Unicode format for Outlook 2007 and above
  • Open OST files of any size
  • Display the contents of encrypted OST files
  • Show the contents of password protected OST files
  • Visualize OST Office 365 Files data
  • Read OST files without Microsoft Outlook and without connecting to Microsoft Exchange Server or Windows Domain Controller
  • Save data from OST files in different formats: PST/MSG/EML/VCF/TXT
  • OST PST Viewer

Tool limitations:

  • Compatible with all versions of Microsoft Windows
  • Doesn’t work on macOS, Android, iOS
  • When exporting data, only the last five objects from the folder are saved in DEMO mode.
M.Romer 13-04-2011

Plus: Easy to use. Relatively inexpensive. Completely restored an intact OST file. Minus: None for me. I don't know whether it works on a corrupted file. SUMMARY: I lost an MS Small Business Server (2008) in a storm. Most of the users were using cached Exchange mode in Outlook, and I was able to open Outlook and copy their existing folders to a PST file. I forgot a couple of folders on one PC (Outlook 2007), though, and I lost access to the OST file after joining the PC to the rebuilt domain. I downloaded the demo copy of Recovery Toolbox for Outlook onto my laptop and used it to examine the OST file. It successfully recovered five items from each folder in the file, so I purchased a licence. Got the email with my license key within about five minutes, applied it to the program and recovered the entire OST file a couple of minutes later. No problems, and the user was happy! I have not tried this on a corrupted OST or PST file, so I can't speak to how well it works on those. But on an intact OST file that you cannot open in Outlook, it worked like a charm. Plus, it cost a lot less than some other recovery programs.

Simpty AW 22-03-2011

PLUS: The software was able to recover an .ost file that was created using Outlook 2010 and Outlook Connector_v14.1. The scanned happend quick for a file under 500MB. The price of the software is well worth it to recover a .ost file!! Offer: I haven't come across any problems with this program, I only just used it like an hour ago. This con is more towards MS and Outlook 2010, if you create a program that uses a file (.ost) that program should be able to open it and be used like before. Total: If you use MS Outlook 2003, 2007, 2010 this program will help you recover .pst and .ost files! The price is great and to this work the first time out. Even thought some of the data was missing, but I think that is more because of MS Outlook .ost file (local file) did not have saved in it. If you need to get calendars, contacts (root level), deleted items, drafts, Inbox (email), Journal (only if the .ost has it in it), Junk Email, and Sent Items then this program is for you! If your using Outlook 2007, 2010 and the plug-in "Outlook Connector" there are 3 folders that this program MIGHT not be able to recover. Any folder in Outlook with the following after the folder name: This is because you have an Hotmail/Windows Live email account and your are using Outlook's plug-in "Outlook Connector". It just goes to show you MS Office Outlook 2010 is still lacking in basic software usability to import a .ost file. Thanks Microsoft way to drop the ball yet again.

Harlan Harris 15-01-2001

Price is very reasonable compared to other programs written to do the same thing. Works to extract data from pst files and also ost files. Many of the other programs will only do pst files. Scanner is slow. Even on a fast computer it can take 1 hour to read the contents of a 2 Gb size file. And then take 3-4 hours to write the contents to a new pst file. I have used the program for 3 years. I needed an ost recovery program and a review of internet indicated that most of the progrmas that would do this started at $300 for a 1 time use. Over the 3 years that I used this program it has paid for itself many times over. If I need to fix someones file I will take the file to my home shop and run the program on a quad core system over night. Recently I was unable to recover a file with this program and so I purchased a more expensive program. The new program ran faster and worked better. However,the new program would only repair pst files, it would not read ost files. So I now use both programs. This program to recover ost files and the other one to recover pst files. For anyone needing to repair pst or ost files this is the place to start. Most of the other programs available that have been written are much more expensive.

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