EdbMails EDB Recovery and Migration software
  • Products
    Exchange EDB / Email Recovery Tools
    • EDB Recovery and MigrationRecover EDB to PST, EDB to Office 365 and Exchange NO Duplicate Migration
    • OST Recovery and MigrationRecover OST to PST, OST to Office 365 and Exchange Migration
    • PST Recovery and MigrationRecover Outlook PST, PST to Office 365 and Exchange Migration
    • MBOX Export and MigrationExport MBOX to PST, MBOX to Office 365 and Exchange Migration
    • NSF Export and MigrationExport NSF to PST, NSF to Office 365 and Exchange Migration
    • EML to PST ExportEML files export to Outlook PST format
    • PST to MSG ExportOutlook PST files export to MSG format
    • MSG to PST ExportExport MSG files Outlook PST files
    Exchange and Office 365 Migration
    • Exchange Server MigrationMigrate Exchange 2007, 2010, 2013, 2016, 2019 to Office 365 tenants. Also, migrate between Exchange servers and PST
    • Office 365 MigrationMigrate Source Office 365 tenants to Destination Office 365 tenants. Also, migrate to Exchange Server and PST
    • IMAP Email Backup & MigrationMigrate all IMAP email servers (Gmail, Zimbra, Zoho, Yahoo etc.), Office 365, Exchange and Backup to Outlook PST
    • SharePoint Online MigrationMigrate documents, files and folders from SharePoint sites
    • OneDrive for Business MigrationMigrate documents, files and folders from OneDrive
    • Microsoft Teams MigrationMigrate Teams, documents, files and folders etc.
    Exchange and Office 365 Backup
    • Office 365 BackupIncremental, Granular, Encrypted and Compressed Office 365 Mailboxes Backup
    • Exchange Server BackupIncremental, Granular, Encrypted and Compressed Exchange Mailboxes Backup
    • SharePoint, OneDrive & Teams BackupBackup Online site collections, Team sites, Office 365 groups, all documents etc.
    • Duplicate Remover - Office 365 & Exchange Remove duplicate emails, calendars, contacts, journal etc. from Office 365 and Exchange
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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
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  3. Recover and export unlimited OST files to PST
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Unlimited OST files recovery and export

Exporting multiple OST files to PST becomes essential during large-scale data recovery, mailbox migration, or when managing data from inactive Outlook profiles. Native methods often fall short when dealing with bulk exports or inaccessible OST files, especially if they're corrupted or orphaned.

EdbMails OST to PST Converter provides a practical solution to export unlimited OST files without size limitations. It supports all Outlook versions, including 2021, 2019, 2016, and earlier, and ensures complete recovery of mailbox items such as emails, calendars, contacts, notes, tasks, and attachments. The tool maintains folder structure, metadata, and integrity throughout the export process, making it suitable for both individual users and organizations.

Exported unlimited OST files to PST

This step-by-step guide walks you through the entire process—from selecting OST files and setting export options to saving the PST output. With EdbMails, you can confidently recover and convert your Outlook data, even from damaged OST files, without needing PowerShell scripts or advanced configurations.

Advantages of EdbMails OST to PST converter

  • 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.
  • Email saving options: You can save individual emails to EML, MHT, and HTML formats, for various requirements.
  • 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.
  • OST file Conversion: EdbMails can convert offline and orphaned OST files into Outlook PST format, providing seamless access to email data.
  • Recovery of corrupt OST files: EdbMails can recover corrupt and ransomware victim OST files, ensuring that valuable data is not lost.
  • 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.
  • 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.
  • 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

    • Enter your email address and password to log in or click on ‘Start Your Free Trial’ to explore the features without registering.

      Login to EdbMails application

    • Select ‘OST Recovery and Migration’.

      Select OST Recovery and Migration

    • Select ‘OST to PST’.

      Select OST to PST

    • You can keep the default job name or enter a custom one for easier identification, 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 offline OST file from your computer drive, then click the ‘Next’ button to continue. You can also share the OST file on a network with read and write permissions assigned.

      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 scans your OST file and recovers data in case of corruption.

      Recovery operation progress

    • Once recovery is complete, the complete folder structure appears in the left pane. Expand the mailbox to browse folders and preview contents. EdbMails’ built-in viewer lets you open emails, contacts, notes, tasks, and calendars directly— no need for Outlook.

    Step 3: Preview and select the mailbox

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

      Select mailboxes or folders

    • You can use the advanced filter settings to export Exchange emails to PST based on criteria like date, subject, attachments, and so on.

    Step 4: Export the rebuilt OST file to PST

    • Review the mailboxes and folders selected for export. Ensure the 'Action' is set to 'Export', then click the 'Start Export' button to begin the process.

      Start OST to PST Export

    • The export operation is now initiated, and you can monitor it in the progress bar. Once the process is complete, EdbMails will display the export operation completion message.

      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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