SysTools OST Converter Tool
Best Software to Convert Microsoft Outlook OST Files into Multiple Formats

Export OST to Different Formats

OST File Conversion Tool is an ultimate solution to convert Outlook file format instantly. The software is capable enough to convert all the data items of an OST file like Emails, Contacts, Calendars, Tasks, Attachments, and others. After conversion, OST files can be accessed from multiple email clients and supported applications including MS Outlook, Mozilla Thunderbird, Adobe Acrobat Reader, and Web Browsers.

Quick and Advanced Scanning Modes

Right after adding the OST file in the software, it provides two different options to scan the OST file. The first option is Quick Scan, which scans the added OST quickly and loads the entire content in software pane. Another option is the Advanced Scan. In case if the added OST file is highly corrupted or damaged then, choosing this option will scan the entire OST thoroughly, recover entire OST data and load it in the software.

Export OST Regardless of Size / Type

The OST converter can convert all types of OST files. So no matter if the OST is orphaned, corrupted, highly damaged, inaccessible, password protected or created by IMAP, Exchange, or Office 365 accounts. The software can convert OST files simply even without resulting in any kind of data loss. Besides, it can handle the conversion of large-sized OST files into the desired format efficiently.

Preview OST Items With Meta Properties

Once the scanning gets completed successfully, the OST Conversion Software loads the file data and displays an instant preview of OST items. One can preview OST data in 7+ preview modes including Normal Mail View, Hex, Properties, Message Header, MIME, HTML, RTF, and Attachments as well. From here, one can preview all the OST items including emails, tasks, contacts, calendars along with their metadata. For example: To, Cc, From, Subject, Attachments, etc. Permanently deleted items will be displayed in Red color and recovered folders with data will be highlighted in bold.

Different Options to Add Outlook OST file

The OST Converter software allows to convert single as well as multiple OST files at once. It provides 2 handy options to add OST files in the software:

• Select File: This option allows to manually add a single OST file at once
• Search File: Allows to automatically search and add multiple Outlook OST files from a Selected or All System Drives.

Supports All Versions of MS Outlook & Windows

OST Conversion Software is a powerful software that supports OST file generated by all the available versions of MS Outlook. The supported versions include Outlook 2021, 2019, 2016, 2013, 2010, 2007, 2003, 2000. Moreover, the software is compatible Windows 11, 10, 8.1, 8, 7, and all below versions of Windows OS and Mac OS X. This means it can be installed and operated easily in all the versions of Windows and Mac OS X.

Decrypt S/MIME or OpenPGP Encrypted OST

In case if the added OST is encrypted with S/MIME (Secured Multi-purposeInternet Mail Extension) or OpenPGP (Pretty Good Privacy) encryption, then OST File Conversion tool will decrypt the file. Once decrypted, users can convert the OST into any of the desired export option and the resultant file can be accessed simply without using any Certificates or Private Keys.

Convert Multiple OST Files in Batch

The software allows to add single or multiple OST files at once. It provides different options to add Outlook OST files and once added, it will convert all the OST files into selected file format quickly. No matter how many OST files are added in the software, it will export all of them at once and create separate resultant files for each OST. Moreover, one can download the complete OST conversion report in CSV format for future reference.