Software Prerequisites & Recommendations

About Software

  • Version


  • License Type

    Personal, Home, Corporate & Technician

  • Version Support

    MS Exchange Server - 2019/2016/ 2013/2010/2007/2003/ 2000/5.5 and 5.0 MS Outlook - Office 365/2019/2016/2013/ 2010/2007/2003/2002/2000/98 and 97 Outlook Express - 6.0/5.5/5.0 and 4.0

System Requirements

  • Hard Disk

    50 MB of disk space

  • Memory

    128 MB Minimum

  • Processor

    Intel® Pentium Processor compatible (x86, x64) or equivalent

  • Operating System

    Windows 11, 10, 8.1, 8, 7, Vista, XP, 2000, 98, NT, 95 Windows Server 2016/2012/2008 R2/2008/2003 R2/2003

Software Guides

Salient Features

OST to PST conversion is a simple task owing to its intelligent and intuitive features.

Convert OST to PST

Convert OST to PST The solution allows smooth migration of OST items to PST file. It lets you export OST file to all versions of MS Outlook (PST file) like Office 365, 2019, 2016, 2013, 2010, 2007, 2003 versions.

Export OST to Office 365 Mailbox

Export OST to Office 365 Mailbox You can export OST file items directly to a cloud-based Office 365 mailbox without any data loss. It involves no complex steps to import/export OST file to Office 365.

Corrupt OST Recovery

Corrupt OST Recovery If your OST file is corrupt or inaccessible, Kernel for OST to PST converter helps you to repair it immediately prior to conversion. It provides a secure mailbox recovery (of existing/deleted emails, attachments, calendar items, etc.) against all OST corruption issues.

Restore OST to Exchange Server

Restore OST to Exchange Server The OST to PST converter allows you to migrate your OST file data straight to the connected email server – such as Exchange Server, Lotus Domino, and Novell GroupWise. The solution allows to restore OST to all versions of MS Exchange Server like 2019, 2016, 2013, 2010, 2007, 2003, 2000, 5.5 and 5.0.

Migrate OST Items to Gmail Account

Migrate OST Items to Gmail Account Besides the option to convert OST to PST file, you can quickly export OST data items to several web-based emailing platforms like Gmail, Yahoo, iCloud, Google Apps, and AOL.

OST to MBOX Conversion

OST to MBOX Conversion The OST to PST converter provides an additional benefit to migrate OST data to MBOX file of Apple Mail, Thunderbird, Entourage, Eudora, Postbox, Netscape and many more.

Preview OST Mailbox Items

Preview OST Mailbox Items The solution not only provides OST recovery, but also allows full mailbox preview of the contained emails (with attachments), tasks, calendar entries, contacts etc. within the Software Console.

Selected Email Migration

Selected Email Migration You can filter the important emails and items of OST file that you want to migrate, using Filter option. Refine your data items based on item type, date range, folder name and other provided filter fields.

Save OST Emails to Multiple Formats

Save OST Emails to Multiple Formats You can save OST emails in different messaging formats like PST, DBX, MSG, EML, TXT, RTF, HTML, MHTML, & PDF.

Split PST by File Size

Split PST by File Size Manage your large-sized PST files with the integrated splitting function that lets you split a PST file after according to a particular size – 1GB, 2GB, 3GB and so on.

Find Messages

Find Messages You can immediately find any specific message from OST file using ‘Find’ option and enter the desired keyword to search the specific emails based on these search parameters: from, to, subject, message has attachment, and received before/after.

Create Graphical Report

Create Graphical Report The File Analysis Report feature enables you to generate a graphical report of the total items migrated from OST to PST file. You can create the report based on four different parameters like Mail Flow Density by Date, by senders, item types, and interaction between users.

Free OST to PST Converter

Free OST to PST Converter This tool comes with a trial version which you can download at absolutely no cost. The trial version has all the features, including the Preview feature. The limitation with the trial version is that you can save up to 25 items per folder only. Download this free OST to PST Converter now to avail the exciting features of the tool for free.

Search OST Files in System Automatically

Search OST Files in System Automatically An advanced Search feature is integrated in the Converter tool to search for all the OST files in the specified System drive or folder automatically. The output is quick and users need not to lookout for OST files at system location manually.


Use steps for quick conversion:
  1. Run Kernel for OST to PST tool.
  2. Select Single/Multiple OST files.
  3. Preview OST file content before saving.
  4. Choose PST format among desired Output file format from the list of options.
  5. Select desired data filters and convert selectively.
  6. Set destination path and Finish conversion.
OST files are the local copies of the data from the Exchange Server configured in the Outlook application. These files are stored at the default system drive location. Know the default file location of the OST file and how to change it by visiting this link - However, the software includes a smart Search feature for automatic search of OST files from the specified system drive for recovery and conversion process.
Yes, the tool does. The solution lets you to recover and migrate all mailbox items such as emails, attachments,drafts, contacts, tasks, calendars, etc. from OST file to PST file.
Yes, you can convert items as per your requirement with the Filter option of the tool. This tool allows you to select the mailbox folders and then apply filters like From, To, Subject, Folder Name, Item Type, and Date Range. Also, it has an additional option to exclude deleted items at the time of conversion.
Yes, this tool migrates OST files generated by different webmails like Gmail,, Yahoo, etc. in IMAP configuration. Also, it supports Exchange OST files.
No, it does not. The OST to PST converter simply scans your OST file and recovers the entire data without making any alterations to its data integrity. The tool preserves the full mailbox hierarchy, and properties after the conversion.
Yes, it can. The tool can smoothly convert any size of OST file to PST file, without worry about the file size restriction. Also, the tool lets you to specify the size after which you want to split the PST file, to make it safer and manageable.
Yes, the tool comes with a unique feature of splitting a file. You can select a size limit in GB. Once you select the size there, let’s say 2GB, and your file is 6 GB, at the end of the process, your file will be saved in 3 different files with 2GB size each.
OST to PST tool doesn’t need a live Exchange connection for its working. So you can use this tool for OST to PST conversion even without Exchange connection.
You can do this even without buying the tool. The free version of our solution offers the preview of entire OST data. So please try it. You even can save a few emails (25 items from every folder) to some selected formats.
With our solution, you can convert what you can see. Just download the free version of the tool, select the OST file, and preview the data. If you can view and read the item, you can convert it too. You can also test it by saving 25 items from the risky folders to the ‘trial version saving formats.'
Home, Corporate, and Technician licenses of the tool come with lifetime validity, and you only need to pay once. Also, you can upgrade the tool to the latest version with the existing license. However, the Personal license of the tool is valid for one year only. You need to upgrade it next year if you want to continue using it.

How it Work's

Select the source OST file


Free Trial Version
an OST to PST Converter

Kernel works for all these requirements

User Reviews

Kernel for OST to PST

(5 / 5) 649 Reviews

I like the user interface of this software very much. It is very effective and easy to use. It can easily convert OST files into PST format. I would like to recommend it to all.


It is very simple and easy-to-use software. A non-technical user can also handle it without facing any issues. I definitely recommend it to others.

G Galton

I love that this software does exactly what I need at a price point that is reasonable. I would like to recommend it to all of you! Thanks!

1 > Last
Share your review