Can I convert an OST file to PST without the original Exchange profile?

Yes. EdbMails is profile-independent. It reads the OST file directly from your drive, so the conversion runs whether or not the original Outlook profile or Exchange Server is available.

Is Outlook required to convert OST to PST?

EdbMails can scan, recover and preview an OST file without Outlook. Microsoft Outlook with a configured profile is required only when exporting the recovered items to PST. Outlook is not required for direct OST to Microsoft 365 or Exchange migration.

Can EdbMails convert corrupt OST files?

Yes. EdbMails recovers data from corrupt, damaged and inaccessible OST files and converts what it recovers into a working PST that opens in Outlook. Recover a corrupt OST file .

Can I convert an orphaned OST file to PST?

Yes. Orphaned OST files, disconnected from their Exchange mailbox after a deleted account or decommissioned server, are recovered and converted the same way an active file is. Recover an orphaned OST .

Is there any OST file-size limitation?

No. There is no application-imposed limit on the source OST size. Small files and large enterprise mailboxes convert through the same workflow.

Can I preview OST data before conversion?

Yes. Select the OST file and its contents display in the interface. Open any folder to preview emails with full headers, attachments, calendar entries and contacts before committing to the conversion. Free OST file viewer .

Does EdbMails recover deleted OST items?

Yes. The scan finds recoverable deleted items, including emails, contacts and calendar entries, even ones that no longer appear in Outlook, and saves them into PST. Recover deleted OST items .

Are attachments and email metadata preserved?

Yes. Attachments, folder hierarchy, email properties, timestamps and message metadata are preserved through the conversion, where those properties remain present and readable in the source OST.

Can EdbMails split a large output PST?

Yes. Set a size limit per PST and EdbMails splits the output while keeping every item and the folder structure intact. Split a large PST .

How many items does the free version convert?

The free trial exports up to 30 items per folder, covering emails, contacts, calendars, tasks and the rest. That is enough to validate recovery on your own data before buying a license.

Which Outlook versions are supported?

EdbMails works with all Outlook versions, and the PST files it generates openin every Outlook version.

Can I migrate OST directly to Microsoft 365 or Exchange?

Yes. EdbMails migrates recovered OST items directly to Microsoft 365 and live Exchange Server with folder hierarchy and metadata preserved. Modern authentication and OAuth 2.0 are supported for both endpoints. Import OST to Microsoft 365 .

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EdbMails

All-in-one Recovery and Migration
- EDB Recovery and Migration
- OST, PST, MBOX, NSF, EML, MSG
- Office 365, Exchange Migration
- SharePoint, OneDrive & Teams
- Google Workspace Migration
- IMAP Migration
- Duplicate Remover
- EdbMails Data Recovery
- Backup Solutions
All Products
EDB Recovery and Migration

EdbMails lets you recover corrupted, damaged, and offline Exchange EDB files, convert EDB mailboxes to PST format, and directly migrate mailbox data to Office 365 and live Exchange Server.

EDB to PST

Recover corrupted, damaged, offline EDB files and convert Exchange EDB mailboxes to PST file format

Public Folder to Exchange

Migrate public folders from an Exchange offline EDB file to live Exchange Server

EDB to Live Exchange Migration

Directly migrate offline Exchange database (EDB) files to live Exchange server

Archive Mailbox to Office 365

Migrate archive mailboxes from offline EDB files directly to Office 365

EDB to Office 365 Migration

Directly migrate offline Exchange database (EDB) files to Office 365

Public Folder to Office 365

Migrate public folders from an offline Exchange EDB file to Office 365

OST, PST, MBOX, NSF, EML, MSG Export and Migration

EdbMails lets you to recover OST and PST files, export OST, PST, MBOX, NSF, EML, and MSG files to PST files, and directly migrate OST, PST, MBOX, and NSF mailbox data to Office 365 and live Exchange Server.

OST Recovery and Migration

Recover offline OST files, convert OST to PST, and migrate OST to Office 365 and Exchange Server

PST Recovery and Migration

Recover Outlook PST files , Export PST to PST, migrate PST to Office 365 and Exchange Server

MBOX Export and Migration

Export MBOX to PST, migrate MBOX to Office 365 and Exchange Server

NSF Export and Migration

Export NSF to PST, migrate NSF to Office 365 and Exchange Server

EML to PST Export

Convert EML files to Outlook PST files

PST to MSG Export

Convert Outlook PST file to MSG file format

MSG to PST Export

Export MSG files to Outlook PST files

Office 365, Exchange Migration

EdbMails lets you securely migrate mailboxes across Microsoft 365, Exchange, Google Workspace (G Suite), and IMAP-supported servers such as Outlook, Gmail, Zimbra, Zoho Mail, and cPanel, ensuring zero downtime.

Office 365 Migration

Migrate between Office 365 tenants, Office 365 to Exchange, Office 365 to PST, PST files to Office 365.

Exchange Migration

Migrate between any Exchange Servers, Exchange to Office 365, Exchange to PST, PST files to Exchange.

Tenant to Tenant Migration

Migrate Mailboxes, Public Folders, Archive Mailboxes between Office 365 Tenants.

Exchange to Office 365

Migrate Mailboxes, Public Folders, Archive Mailboxes from live Exchange server to Office 365.

Office 365 to IMAP

Migrate Office 365 to IMAP, Office 365 to Gmail, Office 365 to Outlook, Office 365 to Zoho etc.

Exchange to IMAP

Migrate from live Exchange Server to IMAP servers such as Gmail, Outlook, and Zoho Mail.

Public Folder to Office 365

Migrate Public Folders between Office 365 tenants with complete folder hierarchy and mailbox data integrity.

Exchange to PST

Export live Exchange Server mailboxes, public folders, and archive mailboxes to Outlook PST files.

SharePoint, OneDrive & Microsoft Teams Migration

EdbMails lets you migrate SharePoint sites, OneDrive data, Microsoft Teams, teams, channels, chats, permissions, and documents between Microsoft 365 tenants while maintaining the existing folder structure and data integrity.

SharePoint Online Migration

Migrate documents, lists, files and folders from SharePoint sites.

OneDrive for Business Migration

Migrate documents, lists, files, folders, private chats from OneDrive.

Microsoft Teams Migration

Migrate Teams, chats, channels, documents, files and folders etc.

Google Workspace / G Suite Migration

EdbMails offers secure Google Workspace migration to Office 365, Exchange, or IMAP, and export to PST covering emails, contacts, calendars and tasks.

Google Workspace Migration

Migrate emails, calendars, contacts, tasks from Google Workspace to Google Workspace, office 365, Exchange and IMAP. Export to PST

Google Workspace to Office 365

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to Office 365

Google Workspace to Exchange Server

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to on-Premise Exchange Server

Google Workspace to IMAP

Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to IMAP, Outlook, Zimbra, Zoho etc.

Google Workspace to Google Workspace

Migrate emails, calendars, contacts, tasks between two Google Workspace / G Suite tenants

Google Workspace to PST

Export emails, calendars, contacts, tasks from Google Workspace / G Suite to Outlook PST files

IMAP Migration

EdbMails IMAP Migration tool lets you easily migrate emails from IMAP servers such as Outlook, Gmail, Zoho Mail, Zimbra, cPanel, and more. Supports IMAP to IMAP, Office 365, Exchange Server, PST, and bulk PST to IMAP migration.

IMAP Email Backup & Migration

Backup and migrate emails from IMAP servers to PST, Office 365, and On-Premises Exchange Server

IMAP to Office 365

Migrate emails, folders, and attachments from IMAP servers to Office 365

IMAP to Exchange

Migrate emails, folders, and attachments from IMAP servers to on-premises Exchange Server

IMAP to PST

Export emails, folders, and attachments from IMAP servers to Outlook PST files for backup

PST to IMAP

Migrate emails, folders, and attachments from bulk PST files to IMAP servers

Duplicate Remover

EdbMails Duplicate Remover lets you easily remove duplicate items from Office 365 and Exchange Server, and from IMAP, Outlook, Gmail, Zimbra, Zoho Mail, etc., ensuring a clean and organized mailbox.

Remove Duplicates

Easily clean up your Office 365, Exchange, Outlook and IMAP accounts by removing duplicate emails.

Remove Duplicates from Office 365

Remove duplicate emails, calendars, contacts, journal tasks, etc. from Office 365.

Remove Duplicates from Exchange Server

Remove duplicate emails, calendars, contacts, journal tasks, etc. from live Exchange Server.

Remove Duplicates from IMAP, Outlook

Remove duplicate emails, attachments from IMAP, Outlook, Gmail, Zimbra, Zoho Mail etc.

Exchange, SharePoint, OneDrive, Teams and Office 365 Backup

EdbMails enables secure, automated backup and recovery for Microsoft 365 services including Exchange Online, SharePoint, OneDrive, Teams, and Live Exchange Server with complete data protection and restore flexibility.

Office 365 Backup

Incremental, Granular, Encrypted and Compressed Office 365 Mailboxes Backup

Exchange Server Backup

Incremental, Granular, Encrypted and Compressed Exchange Mailboxes Backup

SharePoint, OneDrive & Teams Backup

Backup Online site collections, Team sites, Office 365 groups, all documents etc.

EdbMails Data Recovery

EdbMails Data Recovery Software lets you recover permanently deleted data, including photos, videos, documents, and archived files, from partitions on hard drives, SSDs, USB drives, SD cards, and external storage devices.

EdbMails Data Recovery

Recover and restore permanently deleted data from hard drives, SSDs, USB drives, SD cards, and etc.

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OST to PST Converter

Recover Corrupt, Orphaned OST Files and Convert to PST

EdbMails OST to PST Converter scans healthy, offline, orphaned, inaccessible, corrupt, or damaged OST files and recovers mailbox data that remains present and readable in the source. It can recover data from offline or orphaned OST files without connecting to the original Exchange Server, Windows domain, or Outlook profile. Preview the mailbox data detected in the OST and export supported emails, attachments, contacts, calendars, tasks, folder hierarchy, and message properties to PST.

Recover corrupt, orphaned and inaccessible OST files
Preview OST mailbox data before conversion
Convert multiple OST files with no source file-size restriction
Preserve folder hierarchy, attachments and email metadata
Recover deleted mailbox items where recoverable
Convert up to 30 items from every folder with the free trial
Free 24/7 technical support

Just $45 Onwards

OST to Office 365 Migration OST to Exchange Migration Repair OST file Outlook PST Repair tool PST to Office 365 migration PST to Exchange migration

OST to PST Converter Now on Azure Marketplace!

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When Do You Need to Convert OST to PST?

Corrupt OST File

Recover mailbox data when Outlook cannot open or synchronize the OST file.

Orphaned OST File

Access OST data when the original Outlook profile or mailbox no longer exists.

Exchange Server Failure

Recover mailbox data without connecting to the original Exchange Server.

Deleted User or Profile

Retrieve mailbox data from OST files belonging to deleted accounts or profiles.

Move Outlook Data to Another Computer

Convert OST to portable PST and open the mailbox in another Outlook profile.

Keep a Portable Copy of OST Data

Save Outlook mailbox data in PST format for portable access and long-term use.

Choose the Right OST Recovery Path Before You Convert

An OST file is normally a synchronized local copy of a mailbox. If the original Exchange or Microsoft 365 mailbox is still available and contains everything you need, reconnecting the account or rebuilding the OST is usually the first option. Conversion becomes important when the file is orphaned, the profile or mailbox is unavailable, Outlook cannot open the OST, or locally cached data must be recovered independently.

Your situation	Recommended first action	When EdbMails is appropriate
Mailbox and Outlook profile are working	Use Outlook export when a PST copy is genuinely required.	Use EdbMails when you need independent file recovery or more selective recovery options.
OST is stale but the server mailbox is healthy	Rebuild or resynchronize the OST.	Use recovery if the old OST may contain unsynchronized local data.
Mailbox or profile has been deleted	Preserve the original OST before making changes.	Scan the orphaned OST, preview recoverable data and export required items.
Outlook reports corruption or cannot open the file	Work from a copy and try the least-destructive native option first.	Use EdbMails when native repair or recreation cannot restore the required data.

Why Choose EdbMails OST to PST Converter?

Recover Corrupt and Orphaned OST Files

Recover mailbox data even when the original Exchange mailbox or Outlook profile is unavailable.

Quick recovery and OST to PST conversion

Preview Before You Convert

Open and inspect emails, contacts, calendars, attachments and folders before exporting anything.

Best software to recover all types of OST files

Unlimited OST to PST Conversion

Process multiple OST files without an application-imposed source file-size restriction.

Preview all OST file items before conversion

Granular Mailbox Recovery

Select individual folders and mailbox items instead of converting the entire OST.

Directly import OST to Office 365 and Exchange server

Preserve Outlook Mailbox Data

Maintain folder hierarchy, email properties, attachments, timestamps and relevant metadata.

Advanced filtering option for selective OST export operation

Multiple Recovery Destinations

Convert OST to PST or migrate recovered OST data directly to Microsoft 365 and Exchange Server.

Outlook Manual Method vs EdbMails

Capability	Outlook Manual Method	EdbMails
Corrupt OST	Limited / No	Yes
Orphaned OST	No	Yes
Deleted Outlook Profile	No	Yes
Preview Recovered Data	Limited	Yes
Granular OST Recovery	Limited	Yes
Batch / Multiple OST Processing	No	Yes
Deleted Item Recovery	No	Yes
Direct Microsoft 365 Migration	No	Yes
Direct Exchange Migration	No	Yes

EdbMails OST to PST Converter: Key Features

Unlimited OST to PST conversion

Process multiple OST files without an application-imposed source OST file-size restriction. Recoverability and export results depend on the data present and readable in each source OST.

Split PST files from large OST files

EdbMails lets you split the PST output generated from a large OST into multiple smaller PST files based on the selected output size. This changes the PST output layout; it does not split or shrink the source OST.

Granular recovery and OST to PST conversion

EdbMails supports granular recovery of OST files at the item level. Pick specific emails, calendar entries, contacts, folders or notes and convert just those, instead of moving the whole mailbox.

Save OST file in multiple formats

EdbMails lets you save OST files in EML, HTML and MHT in addition to PST. Format compatibility is maintained across applications and the conversion runs cleanly.

Recover metadata and attachments from OST file

EdbMails recovers supported message properties and attachments that are present and readable in the source OST, including applicable appointment and meeting data.

Detailed OST to PST export report

EdbMails generates a detailed export report at the end of each run, covering item counts, mailbox details and a folder-by-folder breakdown of what came across.

Convert OST to PST without an Exchange profile

EdbMails handles OST to PST conversion without an Exchange profile or live Exchange connection. Disconnected and orphaned OST files convert independently, with no reliance on Exchange.

Convert ANSI and unicode OST files to PST files

EdbMails handles conversion of both ANSI and Unicode OST files into PST. It detects the format on its own and converts either one cleanly, with no manual configuration needed.

Recover encrypted and password-protected OST files

EdbMails recovers supported encrypted OST files without requiring the original password and retains supported encryption properties when exporting recovered mailbox data to PST.

How to Convert OST to PST

Download EdbMails

Download and install EdbMails OST to PST Converter.

Select the OST File

Browse and add the offline OST file you want to recover.

Preview and Select Mailbox

Preview recovered folders and choose the items you want to export.

Export OST to PST

Select PST as the destination and start the conversion.

View Complete Step-by-Step OST to PST Guide

OST Recovery and Migration Scenarios

Recover corrupted OST files

OST files are what keeps Outlook usable when you're offline, but corruption breaks that, and for users who depend on email access, that's not a small problem. Power failures and malware are two of the more common causes. EdbMails OST repair tool reliably handles corrupted and damaged OST files, recovering mailbox data and restoring access without disrupting other applications.

Export orphaned OST files

A disconnected OST file is one that's lost sync with its Exchange server mailbox. Server crashes, mailbox deletion, and accidental profile removal are the usual causes. EdbMails OST converter recovers orphaned and severely corrupted offline OST files and exports the recovered data to various formats. Inaccessible data becomes accessible again, with one-click recovery handling what would otherwise be a tedious manual job.

Recover readable OST data after ransomware

If an OST file has been affected by ransomware or malware, first ensure that the file is accessible and safe to scan. EdbMails can recover mailbox data that remains present and readable in the OST file; the results depend on the extent of file damage or encryption. The converter does not bypass ransomware encryption or external security controls and helps export available mailbox data from readable OST files into PST format while preserving supported mailbox folders and items.

Rebuild an OST file in Outlook 2019, 2016, 2013 and 2010

EdbMails OST to PST converter lets you rebuild local OST files from online IMAP, Office 365, or Exchange accounts by converting them to PST. Once exported, the resulting PST imports straight into Outlook 2019, 2016, or 2013, restoring the OST file content end to end with no data loss. Important emails and data remain intact throughout the rebuild, and Outlook returns to working order without the previous broken-OST issues.

Switching email clients

Switching email clients means handling data migration across formats that don't always speak the same language. EdbMails OST to PST converter sorts that out by converting Outlook OST files to PST. The conversion lets you switch clients without losing data, keeping productivity steady during the change and making the OST to PST conversion straightforward, even with large or complex files.

Archiving old emails

EdbMails OST to PST software lets you archive old emails, useful for both individuals and organizations dealing with mailbox bloat. The conversion to universally compatible PST format imports cleanly into Outlook. As mailboxes grow, archiving keeps performance up and ensures retrieval of older messages stays fast. EdbMails handles the archive process while keeping every data attribute intact throughout the run.

OST recovery after system failure

EdbMails OST to PST converter restores and exports mailbox folders after a system failure, application crash, or any disaster scenario. When Outlook can't sync your OST files, data loss is a real risk. EdbMails recovers data from corrupted or inaccessible OST files, prevents permanent loss, and converts the OST content into PST so it's back in Outlook and usable, instead of stuck on a broken system.

Migrating to a new computer

When you move to a new computer, transferring Outlook data is part of the setup. EdbMails OST to PST converter handles that. The conversion to PST gives you a file that imports cleanly into Outlook on the new machine. The tool extracts data with integrity preserved, so your Outlook information moves over organized and ready to use.

Handling offline access issues

When offline access breaks down due to OST corruption, Exchange downtime, or profile disconnection, EdbMails OST to PST Converter helps export readable mailbox data from accessible OST files into PST format. It allows users to access available mailbox items without requiring a live Exchange connection and helps during scenarios such as server issues, profile changes, or migration preparation.

Recovering deleted items

EdbMails OST to PST converter recovers deleted items from OST files, including emails, contacts, calendars, and mailbox content, even items that no longer show up in Outlook. The scan finds permanently deleted items that are still recoverable from the file system, so you can pull them back when needed. Once recovered, they save into PST for easy access, backup, or transfer to another Outlook profile or platform.

Fix Outlook not connecting to server error

The 'Outlook unable to connect to the server' error usually traces back to authentication failure with Exchange or to the email account being deleted on the server side. A corrupted or disconnected OST file after an Exchange crash can also block email access. EdbMails OST to PST Converter handles recovery and conversion, importing the data into Outlook so readable mailbox content can be exported, subject to the condition and contents of the source OST.

Resolve Outlook not syncing error

Outlook sync issues can come from network errors, deleted profiles, or server problems, and a corrupted or disconnected OST file is often the actual culprit, breaking the link between Outlook and the server. Converting the OST to PST with EdbMails recovers the data, restores sync, resolves syncing errors, preserves mailbox integrity, and restores email functionality to working as it should.

Import OST file into Outlook

Outlook doesn't have a built-in option to import OST files, which is exactly the gap that causes problems when you need to access data from one. EdbMails recovers and converts OST files into PST format, including those from corrupted, disconnected, or password-protected OST files. Once the OST is in PST, the file imports directly into Outlook, giving you a clean migration with mailbox data intact.

Fix Outlook data file cannot be accessed

The 'Outlook data file cannot be accessed' error blocks access to emails, contacts, and calendar entries and is usually caused by OST corruption, Outlook to Exchange sync issues, or Outlook profile errors. EdbMails OST to PST Converter recovers OST data and converts it to PST, so you can access your data directly in Outlook. The fix works regardless of which underlying cause kicked off the error in the first place.

Backup and save disk space

When OST files start eating disk space, exporting their contents to a local drive is the practical move. EdbMails OST Converter lets you back up Exchange mailboxes and archive mail items by converting OST files into PST. That reduces server load while preserving mailbox data, making large-volume data management feasible, and storage stays under control throughout the process.

Free vs Full Version Comparison

Feature	Free Trial	Full Version
Scan OST File	Yes	Yes
Preview OST Mailbox	Yes	Yes
Corrupt OST Recovery	Yes	Yes
Orphaned OST Recovery	Yes	Yes
Export to PST	30 items / folder	Unlimited
Select Folders/Items	Yes	Yes
Preserve Attachments / Metadata	Yes	Yes
Source OST File-Size Restriction	None	None
24/7 Technical Support	Yes	Yes

Download Free View Pricing

Evaluate Recovery on Your Own OST Before Licensing

Scan

Add a copy of the source OST and allow EdbMails to identify readable folders and items.

Inspect

Preview important emails, attachments, contacts and calendar entries before choosing an export.

Test Export

Use the free allowance of up to 30 items per folder to create a representative PST.

Validate

Open the PST in a supported Outlook profile and verify folders, dates, attachments and item counts.

What Affects OST Recovery Results?

Recovery depends on the information that is actually present and readable in the source OST. Items that were never cached, data already overwritten, server-only settings, permissions, mailbox rules and Online Archive content not synchronized into the OST cannot be recreated from the local file alone. Severe corruption can also reduce the number of recoverable items or properties.

Recommended practice: Keep the original OST unchanged, scan a working copy, review the preview, export a representative sample and validate the resulting PST before performing a full recovery.

Comprehensive List of Items for OST Recovery,
Export, and Migration

Data from OST	Export to PST	Migrate to Office 365	Migrate to Exchange
Mail Items
Calendar
Contacts
Alias / Distribution Groups
Tasks
Notes
Data Journal
Public Folders (Unlimited)
Archive Mailboxes (Unlimited)
Shared Mailbox
Massive Mailboxes (50 GB+)
Email Categories
Mailboxes (Unlimited)
Meeting Invite Integrity / Status
Attachments
Email headers
Applicable for OST to Exchange and Office 365 Migration
Auto Mapping (Map source and destination mailboxes)
Advanced filtering options
Incremental Migration (No duplicates)
Archive Mailbox migration
Public folder migration
Shared Mailbox migration
Secure OST to PST export
Support for current compatible Outlook versions
Migration reports
24/7 free tech support

Technical Specifications Table

Specification	Supported / Compatible Versions
Source	Outlook OST
Output	PST, EML, HTML, MHT
OST Types	Exchange, Microsoft 365, and applicable Outlook-created OST files
OST Format	ANSI and Unicode
Outlook Versions	See current supported Outlook versions
Windows	See current supported Windows versions
Source File Size	No application-imposed source OST limit
Trial	30 items per folder
Outlook Requirement	Required for PST export

Why organizations choose EdbMails

Verified listing on Microsoft Azure Marketplace
Local OST processing, no connection to the source Exchange Server required
Transparent starting price and free upgrades
Verified testimonials/reviews only

24/7 free technical support with every license
Free trial to validate recovery before purchase
Current product screenshots and video walkthroughs

View All OST to PST Converter Features

Frequently Asked Questions

Can I convert an OST file to PST without the original Exchange profile?
Yes. EdbMails is profile-independent. It reads the OST file directly from your drive, so the conversion runs whether or not the original Outlook profile or Exchange Server is available.
Is Outlook required to convert OST to PST?
EdbMails can scan, recover and preview an OST file without Outlook. Microsoft Outlook with a configured profile is required only when exporting the recovered items to PST. Outlook is not required for direct OST to Microsoft 365 or Exchange migration.
Can EdbMails convert corrupt OST files?
Yes. EdbMails recovers data from corrupt, damaged and inaccessible OST files and converts what it recovers into a working PST that opens in Outlook. Recover a corrupt OST file. Recover a corrupt OST file.
Can I convert an orphaned OST file to PST?
Yes. Orphaned OST files, disconnected from their Exchange mailbox after a deleted account or decommissioned server, are recovered and converted the same way an active file is. Recover a corrupt OST file.
Is there any OST file-size limitation?
No. There is no application-imposed limit on the source OST size. Small files and large enterprise mailboxes convert through the same workflow.
Can I preview OST data before conversion?
Yes. Select the OST file and its contents display in the interface. Open any folder to preview emails with full headers, attachments, calendar entries and contacts before committing to the conversion. Free OST file viewer.

Does EdbMails recover deleted OST items?
Yes. The scan finds recoverable deleted items, including emails, contacts and calendar entries, even ones that no longer appear in Outlook, and saves them into PST. Recover deleted OST items.
Are attachments and email metadata preserved?
Yes. Attachments, folder hierarchy, email properties, timestamps and message metadata are preserved through the conversion, where those properties remain present and readable in the source OST.
Can EdbMails split a large output PST?
Yes. Set a size limit per PST and EdbMails splits the output while keeping every item and the folder structure intact. Split a large PST..
How many items does the free version convert?
The free trial exports up to 30 items per folder, covering emails, contacts, calendars, tasks and the rest. That is enough to validate recovery on your own data before buying a license.
Which Outlook versions are supported?
EdbMails supports the Outlook versions listed in the current EdbMails system requirements.
Can I migrate OST directly to Microsoft 365 or Exchange?
Yes. EdbMails migrates recovered OST items directly to Microsoft 365 and live Exchange Server with folder hierarchy and metadata preserved. Modern authentication and OAuth 2.0 are supported for both endpoints. Import OST to Microsoft 365.

More FAQs

Related OST recovery resources

EdbMails can also migrate recovered OST items directly to Microsoft 365 or Exchange, no PST in between.

OST to Office 365 Migration Import OST directly to Microsoft 365 OST to Exchange MigrationImport OST to live Exchange Server Repair Corrupt OST FileRecover damaged and inaccessible OST Recover Orphaned OSTAccess OST from deleted profiles Free OST File ViewerOpen OST without Outlook Free OST to PST ConverterEvaluate recovery and export up to 30 items per folder Outlook PST RecoveryRepair and recover PST files OST Knowledge BaseAll OST recovery articles

Customer Testimonials

OST file conversion was done perfectly with EdbMails. The interface is simple and user-friendly, making it easy to use. By converting from .ost to .pst, I could securely maintain an archive of all my important emails, contacts, and calendar items. The application is incredibly handy, with reliable performance and quick conversion speeds that make managing my data efficient and hassle-free.

– Neil Simonds
Australia

I am quite impressed with EdbMails OST to PST converter. It includes a free OST file viewer, allowing you to easily select an offline OST file and preview all its contents. The free trial version provides a good overview of the features and lets you test the conversion process. If you need a quick solution to export OST files to PST and save in different formats like EML, HTML, and MHT, this tool does a great job.

– Neville Bowman
New Zealand

OST to PST file conversion is something I strongly recommend using EdbMails. The process was smooth and straightforward, allowing me to complete the conversion in just a few simple steps thanks to its intuitive, user-friendly interface. It’s clear that a lot of thought went into designing this application to make it accessible and effective. Kudos to the entire team for creating such a fantastic tool!

– John Walker
United States

I was able to recover all my emails from the OST file thanks to EdbMails OST to PST software. This tool easily retrieved even the most inaccessible or corrupted OST files and converted them to PST without data loss. It restored my entire mailbox, including emails, contacts, calendar entries, and attachments. The process was quick and straightforward, making it an excellent choice for anyone dealing with OST file issues.

– Blanca Floria
Spain

The best OST to PST converter tool, EdbMails offers excellent functionality at a surprisingly reasonable cost. As a non-technical user, I found it incredibly easy to use thanks to its intuitive graphical user interface (GUI). The software simplifies the entire conversion process, making it accessible for anyone, regardless of their technical expertise. With its powerful features and straightforward design, EdbMails makes converting OST files to PST an effortless task, all while providing great value for money.

– Valère Bret
France

EdbMails app has done wonders for converting OST files to PST. I’ve personally used this outstanding OST to PST conversion tool, and it exceeded my expectations. The software not only handled the conversion seamlessly but also preserved all my emails, attachments, contacts, and calendar entries without any data loss. The process was quick, efficient, and very easy to follow, making it a reliable solution for anyone looking to convert OST files. I highly recommend it for its excellent performance and user-friendly interface.

– Daley Morton
United Kingdom

I've been searching for a long time for a reliable solution to convert data from an offline OST file selectively. Thanks to this fantastic tool, I was able to export only the emails I needed within a specific date range from my offline OST files to PST format. The ability to filter and choose specific data made the process much more efficient, saving me time and effort. The tool’s flexibility and accuracy in handling selective conversion were impressive, and it made managing my email data much easier. I’m thoroughly satisfied with how simple and effective the entire process was.

– Kevin Hines
United States

The best application to recover an accidentally deleted Exchange mailbox! I used EdbMails to simply select the OST file from my computer and completely restore the deleted mailbox by converting it to PST. The process was smooth and efficient, and I was able to recover all my lost emails, contacts, and calendar entries with ease. This life saving software truly saved me, and I’m very satisfied with the results. EdbMails is a must-have tool for anyone dealing with Exchange mailbox recovery. It really puts a big smile on my face! :)

– Julián Gonsales
Mexico

I encountered an error every time I tried to open my OST file with Microsoft Outlook, which was preventing me from accessing important emails and data. I was frustrated and unsure how to resolve the issue, but thankfully, EdbMails OST to PST converter came to the rescue. This tool not only helped me recover my OST file but also allowed me to convert it to a PST file, which I could easily open and access in Outlook. I’m truly grateful for how smoothly and efficiently EdbMails solved my problem, allowing me to regain access to my data without any hassle.

– Liam Anderson
United States

I spent a lot of time trying different methods to convert my OST files to PST, but none of them seemed to work effectively. That was until I discovered this tool. It made the entire conversion process incredibly quick and hassle-free, saving me a significant amount of time and frustration. The simplicity and efficiency of this tool truly stand out, and I couldn’t be more pleased with the results. I highly recommend it to anyone facing similar challenges with OST to PST conversion—it’s a real game-changer!

– Harrison Wren
United Kingdom

I’ve been using EdbMails OST to PST Converter to recover and convert my Outlook data, and it has worked exceptionally well. The tool is highly reliable, with an intuitive interface that makes the entire conversion process straightforward. It efficiently handled my OST file issues, recovering everything from emails to contacts and calendar entries without any data loss. I highly recommend this tool for anyone dealing with OST file problems!

– Lennox Fraser
Canada

I’m very impressed with how this software performed. It smoothly converted my corrupted OST file to PST without any issues. The easy-to-use interface made the entire process straightforward, even for those without technical expertise. This tool is an excellent solution for anyone needing to convert OST files, and I highly recommend it for anyone facing similar challenges.

– Jaxon McLeod
Australia

I was struggling with a corrupted OST file and didn’t know how to recover my lost data. Thankfully, I came across EdbMails OST to PST Converter, and it turned out to be exactly what I needed. It quickly converted my damaged OST file into a fully accessible PST file, restoring all my emails, contacts, and attachments. The process was easy to follow, and the tool was incredibly reliable. I’m glad to have all my important data back, and the entire recovery process was straightforward.

– Thabo Mthembu
South Africa

I’m extremely satisfied with the OST to PST converter software I used. It was a true lifesaver, allowing me to effortlessly migrate all of my corrupted OST files—regardless of size—into the PST format. The process was quick and seamless, and I can now access all my previously inaccessible files without any issues. This tool handled everything efficiently, and I’m truly grateful for such an outstanding solution. Thank you!

– Marek Kowalski
Poland

One of the standout features of this software is its remarkable speed. It quickly converted my large OST file into PST format, saving me a significant amount of time. What impressed me even more was the accuracy of the conversion—everything was perfectly transferred without any data loss. Additionally, the customer support team at EdbMails was prompt, professional, and very helpful, ensuring a smooth experience from start to finish. I’m very pleased with both the software and the level of service provided.

– Anneliese Hoffmann
Germany

I had an excellent experience using EdbMails OST to PST Converter. This tool is efficient and easy to use, making the entire OST to PST conversion process quick and straightforward. I was particularly impressed with how it handled my massive 100GB OST file, converting all my data—emails, attachments, and contacts—without any loss. The intuitive interface made the process simple to follow. I highly recommend EdbMails to anyone needing an effective solution for converting large OST files to PST.

– Eliav Cohen
Israel