Top 5 Trialware OST to PST Converter Software

Marshal HubsEmail Consultant
This article lists the top 5 trialware OST to PST Converter Tools. These tools save a lot of time for users when they want to convert OST to PST after their Exchange server is no longer available or other critical issues with Exchange server or import-export function also failed to fix the issue.
The best way to cope up with the unexpected situation is to prepare properly. With one of the following cases on hand, you can choose the best solution to save your ost file to a pst format. So pick the case & go for the solution!!

First Case: Your Exchange server is no longer available. Does the Exchange Server go into non-functioning or dismounting stage? Or you just moved your company, and you only have the copy of the .ost file. However, you just realised that unless you have a connection to the Exchange Server, Outlook does not let you open this OST file. If this is the case, then there is no supported method of accessing the OST file. These five OST to PST tools could help you get back your OST file data into PST Format safely and securely.

Second Case: If you have details of the user account that was using the desired OST file & that account still exists within the domain. In this case, you can easily access the ost file to the pst format. For this, you could log in as that user, and then make a COPY of the OST in the path noted in the Data Files path, then make sure you disconnect from ALL the networks, and then open Outlook.  From there you can drag and drop to a PST. This method is easy but for this the Exchange Server should be in working condition & the user account must be the ORIGINAL one, not a re-created version.

The other substitute is to back up your data on a regular basis.

This post has covered a list of the best trialware OST to PST converter software packages, considering factors such as: whether or not your Exchange Server is working; you don’t have access to your Outlook profile; and Corrupt OST files (you will be able to open OST file from different Outlook versions). We picked five of the best trialware OST to PST tools in the business. Just pick the one that most closely matches your requirements and your budget.  

Note: All of the following software tools are free to try, however, they put a fairly low limit (about 25) on how many emails can be converted until the software is bought and unlocked.

Stellar OST to PST Converter

The purchased full version converts OST files to PST, MSG, EML, RTF, HTML, or PDF. The software helps you to repair the damaged OST file and some severe OST file corruption. Here are some of the helpful features of the software:


  • Converts all components of an OST file such as emails, contacts, calendars, notes & journals
  • User can convert password protected OST files
  • Oversized OST files conversion supported by the software
  • Supports inaccessible or corrupted OST file conversion
  • Saves OST file in five other different file formats MSG, EML, RTF, HTML, or PDF
  • Supports MS Outlook 2016, 2013, 2010, 2007, 2003, 2002 (XP), 2000
  • Converts multiple OST files in to corresponding PST. (Available in Technician Version)
  • Allows one to compress & split converted PST file (Available in Tech Version)
  • Feature to Export OST file to Office 365 (Available in Technician Version)
  • Converts OST file to DBX & MBOX format (Available in Technician Version)


•   Not Any..


The purchased full version converts OST file to PST file quickly and easily. Some of the advanced features of the software are

•    Converts OST file to PST file format only
•    Supports Outlook 2016, 2010, 2007, 2003, 2002
•    Search & Scan Options for OST file
•    Automatic software deployment and licensing Feature
•    Converts OST file components such as contacts, calendars, etc


•    In some cases, non-default OST file connected to Outlook could not be converted.
•    In some situations, only one or no files found after the scanning process completes.
•    Does not support password protected OST file Conversion

Kernel for OST to PST

The purchased full version converts OST file to PST, DBX, MBOX, MSG, EML, TXT, RTF, HTML, MHTML. Some of the advanced features of the software are:


•    User can search and select preferred email items
•    Converts OST file data in other file formats like DBX, EML, TXT and RTF
•    Converts OST file components like Calendar, Drafts, Notes and Contact lists
•    Easy to use GUI
•    Allows to save email items from a particular date range.
•    Supports MS Outlook 2016/2013/2010/2007/2003/2002/2000/98


•    Does not support to compress & split converted PST file

Systools OST Recovery

The purchased full version converts OST to PST, EML, MSG. Some of the advanced features of the software are:

sys.gif Pros

•    Repairs & Restores OST file into common file types like PST, EML, MSG
•    Supports MS Outlook 2016, 2013, 2010, 2007
•    View All OST File Messages: Mails, Calendar, Contacts, Tasks
•    Converts inaccessible OST file to PST file
•    Works for all versions of Windows OS.


•    Does not support to compress converted PST file
•    Does not support to convert password protected OST file
•    Does not support to convert OST file to DBX & MBOX format
Enstella OST to PST Converter

The software is free for the OST to EML Conversion only. The software doesn't support converting OST file to PST format in its free version. The purchased version has the following important features:


•    Export data from inaccessible OST file into PST file
•    Can save individual emails from inaccessible OST File
•    Can extract data from password protected OST file
•    Supports Outlook versions from 97 to 2013 (32 and 64 bit)
•    Converts OST file to PST, EML, MSG and HTML


•    Doesn't support converting OST file to DBX & MBOX format
•    Doesn't Export OST file to Office 365

Conclusion: I would personally recommend purchasing the full version of Stellar OST to PST Converter to all Outlook users. The purchased version of the software has many advanced features such as deep scan, assurance of no data loss, ability to convert severely damaged OST file & more. Stellar OST to PST Converter is one of the best OST to PST tools out there. Its unique features like - convert OST to Office 365 & split and compact large PST file set it apart from other converter tools.

The User Interface is very easy to use & provides log reports containing detailed information of conversion process along with the ability to preview OST file before converting it.

Have I missed mentioning some trialware OST to PST Converter software? Please mention your suggestions in the article comments.

Comments (26)

Most of the times user don't know how its OST files get corrupted or damaged.Download OST to PST Converter Software is a reliable and efficient software to convert offline storage (OST) file to equivalent personal storage (PST) file. The software safely converts all mail items of Offline folder (OST) file and saves them in new Outlook PST file, along with giving option to save as EML, MSG, RTF, HTML file formats.Best techniques to recover and convert Offline .ost database into outlook.pst extension without modifying internal content and attachments. It can support all versions of 97, 98, 2000, 2003, 2007, 2010, 2013 and 2016.
None of these are actually FREE!!   This is nothing more than a click bait advertisement page for affiliates and the like.  Thank experts exchange for noth'n.
Geeta MalikTech Analyst

Someone has already posted same links twice in their comments and it’s SPAM. I am totally agree with VIP Sharma that above listed applications are not completely free but DEMOWARE. So there are many such DEMOWARE available to perform OST to PST conversion and MailsDaddy for OST to PST is one of them which I tested personally and found it beneficial for the users. Detailed information is available here:
Andrew LeniartIT Professional, Freelance Journalist, Certified Editor
Author of the Year 2019
Distinguished Expert 2020

Nice article.

If it's convinced me of nothing else, it's convinced me to "never" use the product(s) constantly being spammed in the comments section here.

If a product is *that desperate* for exposure, then for sure it has to be useless lol :)
Marshal HubsEmail Consultant


Agreed @Andrew Leniart

View More

Have a question about something in this article? You can receive help directly from the article author. Sign up for a free trial to get started.

Get access with a 7-day free trial.
You Belong in the World's Smartest IT Community