How can I convert offline OST to PST file using Regain OST to PST Converter tool?

Following are the steps to Convert OST to PST file: Download and Open Regain OST to PST Converter. Add Single/Multiple OST file and click Next for scanning. Now software displays a preview of folders, You can check/uncheck folders as per your need before conversion. Click on Export button and select Saving Format as PST file and Destination Location. Now, Click on Convert Now button to initiate the conversion process.

I have severely corrupted OST files; will this tool be able to provide me access to my data?

Yes. Regain OST Converter is developed with a highly advanced algorithm; hence it can regain inaccessible data. This tool deeply scans the 'OST' file, recovers all emails and convert OST emails to another format.

How Would I know if OST File is Corrupt?

An OST file generally becomes inaccessible if it gets corrupt. You may want to open the file but cannot. Rather you may get some error messages that may show corruption in OST files. Here are some of the common error messages – File has several conflict items. Errors when synching mailbox of Exchange Server to OST file. Internal Error (Code = 00000003). Unable to extract folder. Some folders are not opening. Cannot open default folders. The xxxx.ost is not an offline folder Can’t open specific Outlook items in offline mode Outlook gets hang and crashes suddenly when accessing a specific folder

Does this tool help me to Import OST files to Office 365 account. if yes, How?

Yes, Regain OST to PST Converter having feature to import OST files to Office 365. It is almost same as convert to other format, but Office 365, you need to select this option. Here is the steps: Open Regain OST to PST Converter tool. Add OST Files for scanning which you want to import. After scanning, user can see Preview of all available folders in OST file. Here you can Select/De-Select folders which you want to import. Now, Click on 'Cloud Migration' button and select 'Office 365'. Enter Login credentials and then Import OST to Office 365.

Get Latest OST to PST Converter Free Version

Benefits of Using Regain OST to PST Converter

Easily Backup & Archive Outlook Mailbox

PST is a preferred choice for backing up or archiving Outlook mailbox data. Regain OST to PST Converter simplifies OST file conversion and lets users backup emails, contacts, calendars, and more. So, if your Outlook encounters any error or becomes inaccessible, you will have a secure backup of your Outlook profile. Besides PST, users can also backup Outlook mailbox in EML, PDF, MBOX, EMLX, and other formats.

Open and Read OST Files Without Outlook

The Regain OST to PST Conversion Tool has a smart preview feature to open and read OST files. The software does not require Outlook installation on your system and enables users to view OST data. It also supports accessing orphan OST files. It shows all folders within the file, associated emails, and attachments. Further, users can choose folders to backup/migrate emails specifically as per different user requirements.

Bulk Conversion of OST Files

Converting a single OST file at a time can be hectic especially when you have thousands of OST files to convert. Regain OST to PST Converter allows you to Convert OST to PST in bulk without any limitations. One can select single as well as multiple OST files and convert them simultaneously. Moreover, it has no OST file size limitation, thus supporting the conversion of large and oversized OST files as well.

Supported File formats and Email Clients

Regain OST to PST Converter professionally export OST to PST and 15+ Email formats and Cloud Servers.

Browse OST File(s)

Process Regain OST to PST Converter

Save Selected File Format or Email Clients

File Formats- PST, EML, MSG, MBOX, EMLX, PDF, TGZ, HTML, ICS, VCF (vCard) format.

Email Clients- Office 365, Exchange Server, Gmail, Yahoo Mail, Yandex Mail, Rediff Mail, Zoho Mail, GoDaddy, Outlook/MSN/Hotmail, Hostinger Web Mail, All IMAP Account.

03 Simple Steps to Convert OST to PST File

Install and Open Regain OST to PST Converter and Click on Browse button to add OST Files to the wizard.

After adding OST files, All the folders will displayed in tree structure format. Select the desired folders which you want to convert.

Finally, click on Export button and Select PST file as a Saving option and then Click Convert Now button.

Technical Specifications

Ensure to review the technical specifications and prerequisites before installing the Regain OST Converter Software.

System Requirements

Processor - Pentium Class
Memory - Minimum 128MB RAM (512MB recommended)
Hard Disk - 50 MB for Software installation
Disk Space - Enough space to store recovered output

Version Supports

Windows OS Platforms - Windows 11/10/8.1/8/7/Vista
Windows Server - 2012/ 2008 R2/ 2008/ 2003 R2/ 2003
MS Outlook - 2021/ 2019/ 2016/ 2013/ 2010/ 2007 and 2003

Installation / Uninstallation

User's Guide Installation / Uninstallation EULA

Prominent Features of Regain OST to PST Converter

Explore all the features and functions of OST to PST Converter in detail.

Exchange OST to PST Converter

It is one of the best OST to PST converter, as it can recover corrupt OST files and convert orphaned OST files to PST format. The software convert every bit of data from added OST files, including To, CC, BCC, Subjects, and Attachments to working Outlook PST file.

Easy to Use

Regain OST Converter tool embedded with easy and simple user interface, No technical skill is require to access this tool. User just need to follow the instruction given by the software. Do not worry about, how to use? We make this tool for everyone.

Display Preview before Conversion

Assurity before conversion is a must, and Regain Software knows. That's why we offer a data preview of added OST file data before converting it into PST format. You can preview From, Subject, To, Cc and email. You can even see the emails with attachments.

Bulk OST File Conversion

Regain OST to PST Converter doesn't impose any restriction to convert multiple OST files. You can add and convert OST files in batches without any size restriction. There will be no effect on software productivity while converting multiple .ost to .PST files. This feature saves your lots of time and efforts.

Split Resultant PST file

Outlook PST files can get corrupted due to oversize, and to save you from this scenario; we offer a Split PST option in the tool to reduce the resultant PST file size. Using the Split feature, you can choose a specific size for your resultant PST files and save them from corruption.

Multiple Saving Formats

With the Regain OST to PST converter, you can also convert your OST files to several formats, such as MBOX, MSG, EML, vCard, ICS, etc., file formats. You can select desire file format and convert your .OST file to this format. Now you can access OST file to your desire email client.

Filter Option

OST files can keep unwanted data, and to remove these unwanted emails from PST files, Regain OST to PST Converter offers several filter options. You can select folder/subfolders from the left pane to only convert selected folders. You can also check the box adjacent to the remove empty folder option to eliminate empty folders from the process.

OST to Cloud Server

Undoubtedly, the Cloud Server is the new future, and several organizations prefer Cloud Services over Outlook. By keeping this in mind, Regain OST to PST Converter offers direct OST file migration into Cloud platforms. You can import OST to Gmail, Yahoo, Amazon Work Mail, Office 365, etc in just few clicks.

OST to Live Exchange Server

If you're a bit techy, you may know that OST files are basically connected to Exchange Server. Regain OST Converter allows you to export OST files directly to Exchange Server. During or after the export process, you'll not face any issues.

Keeps Meta-properties Intact

Data alteration is the worst scenario for a businessperson, and several third-party tools fail to maintain folder hierarchy and data integrity. But with the software developed by Regain Software, your folder hierarchy and data integrity will remain intact. The software makes the OST to PST conversion task as easy as cutting a cake. You can test the Free version and ensure before purchasing the license.

Free Technical Support

Regain software takes its client as an utmost priority. We have made our software user-oriented. However, if you still face any issues or want to ask us anything related to software, our technical experts are available 24×7. You can ping us anytime, and there will be no charges for this; even if you haven't purchased the tool or have any questions related to the tool, you can ask our experts.

Free Trial Version

Assurity before purchasing is always a first priority in today's online world, and it's a good thing. For the same, Regain Software offers its software with a free trial version. Free version embedded with all features rather than to save all data. Free version allow you to save 30 items per folder at free of cost.

How Regain OST Conversion Tool Helped in a Real-Life Situation?

You can share your queries related to OST file conversion and we will help you to resolve it.

Case: I need to recover multiple OST files left behind after our Exchange server crashed and access the emails. These clusters of OST files are of different employee accounts. Some are quite large and might be corrupted as well. I tried to find an effective manual OST to PST Converter method, but it requires Outlook profiles. Hence, it is important to backup these OST files into PST, while keeping intact the folder hierarchy. Also, I can’t lose these important data including emails, attachments, contacts, and calendars. Can you suggest any effective solution like a professional tool that converts OST to PST in bulk but efficiently and correctly?

Solution we Provided Regain OST to PST Converter is the most trustworthy and highly recommended software for the safe conversion of OST. This software supports multiple OST file conversions at once and has no restrictions on file size. Moreover, it will make sure your important data such as emails, contacts, attachments, metadata, and calendar is saved with original formatting. You do not need to install and configure Outlook on your PC to run the software, as it works independently. All you need to do is follow the simple procedure and save OST data as Outlook PST or any other easily accessible format like PDF document.

Reviews & Ratings

Explore Feedback about Regain OST to PST Converter from Our Customers and Review Platforms

Software Reviews

CNET Regain OST to PST Converter is a 100% secure and authentic tool to backup OST files in bulk. It converts OST without altering its original emails and keeps folder hierarchy intact. View Details →

Software Suggest Reviews for Regain Software

Software Suggest The OST to PST Converter by Regain is highly recommended software for converting large and bulk OST files. Before conversion, it enables users to open and read OST emails, which is very impressive. View Details →

Client Reviews

Thank you very much Regain Software! I am really surprised with the performance of Regain OST to PST converter. It worked so well that I got all my emails within minutes.

★★★★★

James Philip (Canada)

I am really glad to buy Regain OST to PST converter tool. This tool helped me a lot when I was stuck with inaccessible Outlook ost file. this tool converted the OST file to PST format without causing any loss.

★★★★★

Philbert Fitzpatrick (USA)

From my experience in IT infrastructure, I would strongly recommend Regain OST to PST converter from Regain Software, if you have trouble in your OST file.

★★★★★

Ricky Mike (London)

Submit Your Reviews

Features Comparison between Free OST to PST Converter and Full Version

Software Features	Trial Version	Full Version
Convert OST File to PST	✔	✔
Easily Convert large-size .ost file	✔	✔
Save OST files into PST, EML, MSG, MBOX, EMLX, PDF, TGZ, HTML, ICS, VCF (vCard) format	✔	✔
Import OST file to Office 365, Gmail, Yahoo Mail, Outlook.com, GoDaddy, Amazon Workmail and more.	✔	✔
Maintain all folders hierarchy and email properties	✔	✔
Show Preview of emails before Saving	✔	✔
Free Technical Support	✔	✔
Saving Capabilities	Save 30 items/Folder	Unlimited
	Download	Buy Now

FAQs

Clear all your doubts with the questions asked by our clients.

Following are the steps to Convert OST to PST file:

Download and Open Regain OST to PST Converter.
Add Single/Multiple OST file and click Next for scanning.
Now software displays a preview of folders, You can check/uncheck folders as per your need before conversion.
Click on Export button and select Saving Format as PST file and Destination Location.
Now, Click on Convert Now button to initiate the conversion process.

Click the link, if you want to see OST to PST Converter’s working screenshots.

Yes. Regain OST Converter is developed with a highly advanced algorithm; hence this tool allow user to recover OST file and restore it in working format. This tool deeply scans the 'OST' file, recovers all emails and convert OST emails to another format.

No, It does not make any changes in its formatting. Our tool maintain the data integrity and folders hierarchy as well.

The demo version is just a restricted version of the licensed version. In working both are same. You can save only 30 items in each folder with the demo version.

We are round the clock available to our customers. Our dedicated team of technical support executives provides free technical support for our software-related tasks. Users can easily contact our support through email/ live chat, or telephone. You can write to us at support@regainsoftware.com for technical support-related concerns.

No. There is no file size limit. You can easily convert any size of .ost file. You can easily convert a large size of data in a very efficient manner. Also, you can keep a limit on the resultant .pst file size to get rid of oversized .pst files.

Related blog: Reduce OST file size in Outlook

An OST file generally becomes inaccessible if it gets corrupt. You may want to open the file but cannot. Rather you may get some error messages showing corruption in OST files. Here are some of the common error messages –

The file has several conflict items.
Errors when synching the mailbox of the Exchange Server to the OST file.
Internal Error (Code = 00000003).
Unable to extract the folder. Some folders are not opening.
I cannot open default folders. The xxx. ost is not an offline folder.
Can't open specific Outlook items in offline mode
Outlook gets hung and crashes when accessing a specific folder

To know more in details visit here: OST File Corruptions and Their Solutions

No, it does not require. Software only requires an OST file, whether it is healthy or corrupted. The rest of the thing, Regain OST to PST Converter, will do. Orphaned OST files can also be converted.

Yes, Regain OST to PST Converter supports all versions of MS Outlook. You can easily convert OST files to any format without any issues.

Yes, it can. This tool lets you convert inaccessible or orphaned OST files to PST without altering the original OST file.

Yes, Regain OST to PST Converter includes a 'Bulk Conversion' feature. You can easily add multiple OST files and convert them to PST in one go, saving you time and effort.

Yes, Regain OST to PST Converter having feature to import OST files to Office 365. It is almost same as convert to other format, but Office 365, you need to select this option. Here is the steps:

Open Regain OST to PST Converter tool.
Add OST Files for scanning which you want to import.
After scanning, user can see Preview of all available folders in OST file.
Here you can Select/De-Select folders which you want to import.
Now, Click on 'Cloud Migration' button and select 'Office 365'
Enter Login credentials and then Import OST to Office 365.

Regain OST to PST Converter