EdbMails EDB Recovery and Migration software
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    All-in-one Recovery and Migration
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    • EDB recovery and Migration
    • OST, PST, MBOX, NSF, EML, MSG
    • Office 365, Exchange Migration
    • SharePoint, OneDrive & Teams
    • G Suite Migration
    • IMAP Migration
    • Duplicate Remover
    • Windows Data Recovery
    • Backup Solutions

    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 G Suite Migration Tool lets you easily migrate emails, calendars, contacts, tasks, and more from G Suite to Office 365, Exchange Server, and IMAP servers using a Google Admin account without requiring individual user credentials.

    G Suite Migration
    Migrate emails, calendars, contacts, tasks from G Suite to Office 365, G Suite to Exchange, G Suite to IMAP Servers
    G Suite to Office 365
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to Office 365
    G Suite to Exchange Server
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to on-Premise Exchange Server
    G Suite to IMAP
    Migrate emails, calendars, contacts, tasks from Google Workspace / G Suite to IMAP, Outlook, Zimbra, Zoho etc.

    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.

    Windows Data Recovery

    EdbMails Windows 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.

    Windows Data Recovery
    Recover and restore permanently deleted data from hard drives, SSDs, USB drives, SD cards, and etc.
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User’s Manual
OST Recovery and Migration

User Manual

User Manual

  • Overview
  • System Requirements
  • Installation
    • Installation process
    • Reinstall or Upgrade
    • How to uninstall
  • Initial Setup
  • FAQ
    • OST to PST
    • OST to Office 365 Migration
    • OST to Exchange Migration
  • Videos
    • OST to PST Converter
    • OST to Office 365 Migration
    • OST to Exchange Migration
  • Screenshots
    • OST to PST
    • OST to Office 365 Migration
    • OST to Exchange Migration
  • How it works?
    • OST to PST Converter
    • OST to Office 365 Migration
    • OST to Exchange Migration
  • Connect to Exchange server for multiple mailboxes migration
    • Connect with Global Admin
    • Connect to multiple users using CSV file
    • Connect using full access permission
    • Connect individual users for Single / Specific user Migration
  • Connect to Hosted Exchange for its Migration
    • Connect with Full Access permissions
    • Using multiple user credentials with CSV file
    • Connecting to Individual user for its migration
  • Connect to target Office 365
  • Modern Authentication Using OAuth 2.0
    • Microsoft 365 modern authentication
    • Automatic Registration
    • Manual Registration
  • Set Exchange Server Impersonation rights
    • Exchange 2007 and below
    • Exchange 2010, 2013, 2016 and 2019
    • Set using Exchange Server GUI
  • Knowledge Base
    • Corrupt OST file recovery
    • Unicode and ANSI OST format
    • Split OST file
    • Rebuild OST file
    • Exchange mailbox backup
    • Recover orphaned OST file
    • Recover all Exchange and Outlook OST files
    • Recover metadata and attachments
    • Export unlimited OST files to PST
    • Free OST file viewer
    • Granular recovery of OST file
    • Recover encrypted OST file
    • Recover deleted mailboxes from OST
    • Export email, calendars, contacts
    • Selective OST export
    • Migrate OST to Office 365
    • OST to Live Exchange
    • Outlook OST cannot be accessed
    • Log report
    • Fix Outlook not connecting to server error
    • Fix Outlook the set of folders cannot be opened
    • Fix Outlook not syncing error
    • Outlook Cached Exchange mode
    • Fix Outlook data file cannot be accessed
    • Fix the error Outlook inbox not updating
    • Your mailbox has been temporarily moved on Exchange server
    • Open OST file in Outlook
    • Repair corrupted OST files from Outlook 365
    • Save Outlook emails to hard drive
    • Import OST file into Outlook
    • Your Outlook data file cannot be configured
    • Errors have been detected in the OST
  • Incremental Migration
  • Exchange Throttling Policy
  • Map the Mailboxes
  • Multifactor Authentication
    • Enable MFA in Office 365
    • Create App password for MFA
    • Disable Security Defaults
  1. Home
  2. Product
  3. Recover Unlimited OST Files and Convert OST to PST
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Unlimited OST Files Recovery and Export

When managing multiple mailboxes at once, exporting several OST files to PST quickly becomes a practical requirement. This is common during large-scale mailbox recovery, data migration projects, or when working with inactive or disconnected Outlook profiles. However, built-in Outlook export options offer limited support, particularly for large, corrupted, or orphaned OST files, making bulk exports slow and unreliable.

EdbMails OST to PST Converter is designed to handle large-scale OST exports with ease, allowing unlimited file conversion without size limits. It supports all Outlook versions including 2021, 2019, 2016, and earlier, and ensures complete recovery of emails, calendars, contacts, notes, tasks, and attachments while preserving folder structure, metadata, and overall data integrity for both individual and organizational needs.

Exported unlimited OST files to PST

In this step-by-step guide, you’ll learn how to select OST files, configure export options, and save the data in PST format. With EdbMails, you can recover and convert Outlook data effortlessly, even from damaged OST files without relying on PowerShell scripts or manual setups.

Advantages of EdbMails OST to PST converter

  1. Unlimited OST recovery and export: EdbMails allows for unlimited recovery and export of OST mailboxes, making it easy to access and backup email data in your computer.
  2. Email saving options: You can save individual emails to EML, MHT, and HTML formats, for various requirements.
  3. Easy data extraction: With EdbMails, you can extract emails, contacts, calendars, tasks, notes, and journals and also split an oversized OST file to multiple PST files.
  4. OST file Conversion: EdbMails can convert offline and orphaned OST files into Outlook PST format, providing seamless access to email data.
  5. Recovery of corrupt OST files: EdbMails can recover corrupt and ransomware victim OST files, ensuring that valuable data is not lost.
  6. Maintains original folder structure: EdbMails maintains the original data and folder structure of the OST file, ensuring that exported PST files are an identical copy of the source file. It can also convert ANSI and Unicode non-English special characters in your emails without changing the email formatting.
  7. No data modification or deletion: Exporting OST to PST with EdbMails does not result in any modifications or deletions of the source file and is capable of migrating OST to Office 365 and Live Exchange.
  8. Customizable email export filters: You can export specific mail items using Include/Exclude filter settings, making it easy to convert only the data you require.

EdbMails OST to PST converter tool offers

  • Lifetime licenses and free software upgrades
  • Free 24/7 Technical Support for lifetime
  • Support for all Outlook and Windows computers
  • Opening OST files and previewing the data before export
  • Export OST data to PST using EdbMails Software

    Step 1: Download and install EdbMails OST to PST converter tool

    • Download and install the EdbMails application on any Windows-based computer.

      EdbMails software installation

    • Launch the EdbMails application on your system
    • Enter your registered email address and password, then click ‘Login’. New users can select ‘Start Your Free Trial’ to continue with the trial version.
       Note: The Free Trial allows you to access all features and export up to 30 items from each folder. To remove this limitation and enable full access, a valid license must be purchased from the EdbMails website.

       Click here to purchase the license from the EdbMails website.

      Once the purchase is complete, close and reopen the EdbMails application. Then, log in with the same email address and password used during the purchase to activate your license.

      Login to EdbMails application

    • Select ‘OST Recovery and Migration’.

      Select OST Recovery and Migration

    • Select ‘OST to PST’.

      Select OST to PST

    • You may keep the default job name as it is, or select the ‘New Job’ option if you want to rename and create a new job.
    • Then click 'Next' to continue.

      Enter export job name

    Step 2: Select the OST file containing your mailbox data

    • Click ‘Browse for OST file'.

      Browse for EDB file

    • Select the OST file that you want to export from your computer drive, then click the ‘Next’ button to continue. If needed, you can also choose an OST file located on a network drive, provided it has the required read and write permissions enabled.

      Select OST file

    • Click ‘Browse’.

      Click Browse

    • Select the folder where you want to save the exported PST files, and ensure the drive has enough free space for the export.

      Select PST location

    • EdbMails thoroughly examines the offline OST file to restore mailbox data, even if the file is damaged or corrupted. It carefully evaluates the file’s structure and internal data to retrieve emails and other mailbox items. The scan duration may vary based on the file size and the extent of corruption, so allowing the process to finish ensures complete and accurate recovery.

      Recovery operation progress

    • Once the recovery is complete, the application presents the OST file data with its original folder and subfolder structure fully intact. You can easily expand any folder to browse through its contents. Selecting a folder, such as Emails, Contacts, Notes, Tasks, or Calendar, displays all related items, along with a clear and detailed preview on the right side of the screen. With EdbMails OST to PST Converter, you can open OST files even without installing Outlook.

    Step 3: Preview and select the mailbox

    • Select the required mailboxes/folders and click the ‘Next’ button.

      Select mailboxes or folders

    • EdbMails allows you to apply filters to customize your export process. For example, you can use date filters to export items within a specific date range. To do this, go to the ‘General’ tab on the left side and then click the ‘Settings’ tab at the top right.

       Click here to learn more about setting date filters for OST to PST conversion.

    Step 4: Export the rebuilt OST file to PST

    • EdbMails OST to PST converter ensures fast and accurate conversion of offline OST files to PST format. Review the selected mailboxes and folders for the export operation, ensure the ‘Action’ is set to ‘Export’, and then click the ‘Start Export’ button to begin the export process.

      Start OST to PST Export

    • The export process has started, and you can track its progress through the status bar. The interface shows the mailbox and folder being exported, the destination PST file location, and the count of items successfully exported. When the export is complete, EdbMails will display a message confirming that the operation has finished.

      OST to PST Export progress


Additional resources:

  • Recover Orphaned OST file
  • Recover all Exchange and Outlook OST files
  • Recover metadata and attachments
  • Free OST file viewer
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 In this manual

IntroductionAdvantages of EdbMailsSteps to export OST files

OST Recovery and Migration

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