Free OST Viewer
Use free OST reader application which enables you to open & view content of corrupted, orphaned or offline OST file Independently. The software does not require MS Outlook or Exchange Server for opening OST files on MAC and Windows machines.
Quick Search to Find OST Files
The OST viewer is embedded with the feature to search all files having .ost extension from the selected drive or directly. You can also browse or add OST file manually.
Preview OST File Mail Properties
Once the OST file is loaded, the OST reader software preview all items along with all properties such as: To, CC, BCC, From, Subject, Date and attachments etc.
Read OST File Without Outlook
This is a standalone OST viewer application which does not require Microsoft Outlook to open offline OST files. You can view the content of OST file with Outlook.
Support all kinds of OST files
The Outlook OST viewer supports all types of OST file to scan and view its items even if OST files are corrupted, damaged, password protected or orphaned.
Quickly View Emails in OST File
The OST file opener is a free solution to read messages independently from the OST file. You can View all mail properties by clicking on a particular message.
Read Contacts from OST File
The OST viewer is also capable to fetch all contacts and preview with item counts. You can read contact all properties: name, mobile no, address and birth date etc.
View OST File Calendars
This is the best function of this free OST file viewer tool which enable users to open Outlook calendars and read its subject, start date, end date and location etc.
Forensic Analysis of OST File
You may also use this free OST reader application for forensic analysis of OST file. The tool provides an advance search option to search & view required mails only.
No Need of Exchange Server
This OST viewer program works independently, which does not require Exchange Server or any additional application to view contents of Outlook OST file.
Preserve Folder Hireachay
The software preserves the original folder structure of OST file which helps to read emails from selected folder. You can see all folders in the right panel of OST viewer.
Allows Opening Large OST Files
The tool has been tested on large OST files and work well to read mail from OST file. Thus, you can read OST file of any size without any limitation or restriction.
Available for MAC & Windows
Mailsdaddy provides OST viewers free for Mac and Windows. Download the required application to check how to open OST file in MAC or Windows.
This is the technical information section where you can know about .ost extension and a few scenarios where this OST file viewer comes into demand. This section does not include software related details so if you don't want to read these technical facts so skip this tab.
OST File extension is an offline storage table file created on client end after establishing a connection between an Exchange server and Outlook using "Cache Exchange Mode". An OST file store email messages, contacts, calendars and other items. The main benefit of .OST file type is that you can access messages in offline mode even internet connection disabled or Exchange server slow down.
By using this free OST file viewer tool you can open and view OST file content along with all Mail properties without any limitations. To enable export functions, you can upgrade this software to pro edition.
|Application Name:||MailsDaddy Free OST Viewer|
|Processor & RAM:||Minimum 2.4 GHz Processor and 1 GB RAM|
|Minimum Hard Drive Space:||50 MB|
|Supported Windows OS:||Windows 10, 8.1, 8, 7, Vista, XP and All Older Editions (32-bit & 64-bit)|
|Supported MAC OS X:||Mac OS X 10.11, 10.10, 10.9, 10.8 and all previous editions of MAC OS X|
|Microsoft Outlook:||MS Outlook 2016, 2013, 2010, 2007, 2003 and all previous editions (32-bit & 64-bit)|
I was trying to open an orphan OST file with MS Outlook but its showing an error "outlook.ost is not an Outlook data file". I got this free OST viewer which helped me to open IMAP OST file content independently.
Christian Crawley – United States
OST Viewer is one of the best application that i ever found to View Outlook OST files without MS Outlook Application. The tool also supports password protected OST file.
Nelson Kallis - Sweden
I was wondering how to open hotmail OST file without Outlook and found this OST file reader, which really full fill all my needs. I just want to say a special thanks to the development team for this free program.
Steven Snell – United Kingdom