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Stellar Converter for OLM

TOP USE CASES

When to Use OLM to PST Software?

Want to Export from Mac Outlook to Windows Outlook?

ant-to-migrate-from-Mac-Outlook-to-Windows-Outlook

Mac Outlook and Windows Outlook offer a similar UI, features, and functionality. However, you can't transfer a mailbox directly between them because of OS differences. This OLM to PST converter simplifies the process, offering direct and complete conversion without needing Outlook installed, and includes features like file preview and search filters.

Need to transfer Mac Outlook data to Microsoft 365?

Need-to-transfer-Mac-Outlook-data-to-Office-365

Stellar Converter for OLM allows you to migrate Mac Outlook’s OLM data to a Microsoft 365/Office 365 account in a few simple steps. The migration process is direct and simple. There is no risk of data loss. You can also populate your M365/O365 account with mailbox folders in the same structure as in OLM.

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Need Mac Outlook emails in PDF or HTML format?

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Sometimes, Outlook users have to collect emails and other mailbox items in PDF or HTML format for presentations, internal investigations, etc. Stellar Converter for OLM makes it easy to save selective mailbox items in PDF, HTML, and other formats. The OLM to PST converter also saves considerable time compared to exporting emails manually.

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KEY FEATURES OF OLM TO PST CONVERTER

Software Key Features

Converts Outlook for Mac Data (OLM) File into PST

Converts Outlook for Mac Data (OLM) File into PST

Stellar Converter for OLM converts mailbox items, such as Emails, Contacts, Calendars, Tasks, Notes, etc. from Outlook for Mac data file (OLM) into Microsoft Outlook data file (PST). The OLM to PST converter software maintains the original folder hierarchy, mail settings, and data of Mac Outlook mailbox during OLM to PST conversion.
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Operates Independently — No Outlook Required

Operates Independently — No Outlook Required

The software can convert OLM for Mac files to PST, MSG, and EML formats on Windows systems without Microsoft Outlook being installed. There is no need to set up an Outlook profile for the conversion. You only need Outlook afterwards if you want to open or import the converted PST file.

Migrates Local Mac Outlook Data to Microsoft 365

Migrates Local Mac Outlook Data to Microsoft 365

Stellar Converter for OLM Technician transfers mailbox data from a local Mac Outlook OLM file directly to a Microsoft 365 account. Use the Browse option to select your OLM file, then click Convert. After previewing the converted items, select the Microsoft 365 export option and log in with your Microsoft 365 credentials to complete the export. The folder structure remains unchanged from the original OLM file. For secure, authorised access, the software uses an application registered in Microsoft Entra ID (Azure AD).

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Free Preview of Converted OLM Mailbox Items

Free Preview of Converted OLM Mailbox Items

The software helps you verify the accuracy of converted mail items by displaying a free preview of individual mailbox components in a three-pane window. The left pane displays the mail items in a tree structure. You can view the list of converted OLM emails in the middle pane of the interface. The content of individual mail items is displayed in the right pane.

OTHER FEATURES OF OLM CONVERTER TOOL

Additional Benefits of Your Software

Smart Saving Options

Smart Saving Options

The OLM to PST converter utility can convert OLM into PST and other file formats, such as MSG (for message) and EML (for email). When saving the converted OLM mailbox as PST, you have the choice to export selected items to an existing Outlook Profile or save it in a completely new PST. The software offers an Advanced filtering option that allows filtering by Date Range, sender's email ID, or excluding particular folders. It can also automatically split large mailboxes during the conversion process.

Wide System Compatibility

Wide System Compatibility

The software runs on Windows 11, 10, and 8.1 (64-bit), including Intel-compatible (x64) and ARM-based PCs. Mac users can also run it via Parallels Desktop, allowing them to convert OLM files without a separate Windows machine.

Finds and Lists all OLM Files

Finds and Lists all OLM Files

The OLM to PST converter software provides a ‘Find’ option, which you can use to locate or search OLM files in your system. The ‘Find’ option is particularly useful when you don’t exactly know the location of the file. The software searches all OLM files and lists them in the interface, from which you can select the file you need.

View and Save Log Report

View and Save Log Report

The software allows you to save the Log Report of the OLM to PST conversion process, which you can use to analyze the conversion process at a later stage. Log report captures all the conversion process details along with any issue reported in the process. To view the Log Report, you just need to select “Log Report” option from the View menu.

Auto Split PST File

Auto Split PST File

The OLM to PST converter software can also split the oversized PST file automatically at approximately 45 GB in size. The software ensures that the converted mailbox works smoothly with the Outlook installed on user’s system. By default, the auto split option is enabled under ‘Advanced Filter’ option. You can disable the option if you don’t need to split the new PST file. Learn more

Stellar Converter for OLM Technician

Stellar Converter for OLM Technician

Stellar Converter for OLM Technician offers more extensive features, such as converting and saving OLM files in multiple file formats. Essentially, the Technician edition lets you export converted OLM files to PST, EML, MSG, HTML, RTF, and PDF. It also enables you to export the OLM file data to Office 365 directly. Try it now

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  • Installation on Windows System Only
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Exports OLM file to PST, PDF, HTML or M365
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  • Includes all features of Standard
  • Converts to PST, MSG, EML, PDF, and HTML
  • Direct Export to Microsoft 365
  • Files Stored on Local User System

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Technical Specifications

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About Product
Stellar Converter for OLM
Version: 6.1.0.0
License: Single System
Edition: Standard & Technician
Language Supported: English
Release Date: October 2026
System Requirement
Processor: Intel-compatible (x64), ARM processor
Memory: 16 GB recommended (8 GB minimum)
Hard Disk: 250 MB of Free Space
Operating System:
(64 Bit only) 		Windows 11, 10, & 8.1 & Parallels for desktop (Mac Platform)
Documents

USEFUL ARTICLES

Product Related Articles

How to migrate OLM to Microsoft 365

If you are looking for a direct or an easy method to migrate OLM files to Microsoft 365, you may use Stellar Converter for OLM Technician software to perform the migration. Steps to migrate OLM files to Microsoft 365 are: ..

How to Import PST file in MS Outlook after Conversion with Stellar Converter for OLM?

Once you have converted OLM file into PST format you would have to import PST file into MS Outlook to access its data items. As this Knowledge Base guides you through the process of importing PST file in MS Outlook go through it to get acquainted with the

Method to Save Converted Mailbox in Stellar Converter for OLM

This Knowledge Base will acquaint you with the steps using which you can save converted mailbox in file formats, such as PST. EML, and MSG through Stellar Converter for OLM.

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FIND YOUR ANSWERS

FAQ's

Follow these instructions to export OLM file to PST:

  • Install and run the software on your system.
  • Click ‘Browse’ to select the OLM file.
  • Once you have selected the OLM file, click the ‘Convert’ button.
  • Check preview of the converted mailbox items.
  • Click the ‘Save Converted File’ button and select the ‘PST’ file option.
  • From the ‘Save File’ screen, select either “Save each mailbox for Individual PST” or “All mailbox in a single PST”.
  • Click the Browse button to select the destination path and click ‘Save’ to export the OLM File to PST.

To access your mailbox data, import the resultant PST file into Outlook.

Below are the steps to migrate OLM file to M365 using Stellar Converter for OLM Technician edition:

  • Launch Stellar Converter for OLM software.
  • Click 'Browse' to select the OLM file.
  • Click ‘Convert’ to initiate the conversion process.
  • Preview the converted mail items.
  • Click on ‘Save Converted Mailbox’ on the Home menu.
  • Select Microsoft 365 under Save Options and then click Next.
  • Use your M365 profile configured in Outlook and click Save.

This will save the converted mail items to Microsoft 365 account.

Once you have converted your Outlook for Mac 2011 or 2016/2019 (OLM) data into PST format using Stellar Converter for OLM, the next step involves importing the converted OLM file into Outlook 2010 or other versions. The procedure to import the file into Outlook 2010 is as follows:

  • Open Outlook 2010 and click the ‘File’ tab.
  • Select ‘Open and Export’ and then click the ‘Import/Export’ option.
  • In the ‘Import and Export’ wizard that appears, click ‘Import from another program or file’ and then click the Next button.
  • In the ‘Import a file’ dialog box, select Outlook Data File (.pst) and click ‘Next’.
  • In the ‘Import Outlook Data File’ dialog box that appears, click the Browse button to upload the PST file.
  • Under ‘Options’ section, select ‘Replace duplicates with items imported’ to prevent data duplication.
  • Click ‘Next’ and then click ‘Finish’.

Yes, you can convert multiple mailboxes at once into PST, Office 365, or any other required format by using Stellar Converter for OLM. However, the mailboxes should be in a single OLM file.

Yes, the OLM converter software can help convert all the attachments along with the email messages. The original structure and attributes of the enclosed attachments remain intact during the conversion.

Yes, both Standard and Technician versions of the OLM to PST converter tool are compatible with Windows 11, 10, 8.1, and 7. Also, both the OLM converter software editions support Outlook 2021, 2019, 2016, 2013, 2010, 2007, and 2003 versions. However, the feature to export OLM file to Office 365 is supported by the Technician version.

Yes, you can export OLM file into Outlook 2019 Unicode PST format without any email loss by using the Stellar Converter for OLM software.

Yes. Both the Standard and Technician editions support Windows 11, 10, and 8.1 (64-bit), including ARM/AMD-based PCs and Macs running Windows through Parallels Desktop. Microsoft Outlook doesn't need to be installed for conversion. The converted PST works with Outlook 2021, 2019, 2016, 2013, 2010, 2007, and 2003. Export to Microsoft 365 is available in the Technician edition.

• Stellar Converter for OLM offers a Free Demo version with the ‘Try before you Buy’ motto. This means you can evaluate the features and functionality of the software before purchasing it.


• Most importantly, the software’s demo version allows you to preview the converted emails and other items, such as attachments, calendar, contacts, tasks, notes, and journals. To save the converted OLM to PST, Office 365, etc., you need to purchase the license key and activate the software.

No. The OLM to PST converter software can only convert a single OLM file at a time. However, this OLM conversion tool can convert multiple mailboxes in the OLM file into PST, EML, MSG, etc., simultaneously.

No. From version 6.1, the software converts OLM files to PST, MSG, and EML even on systems without Microsoft Outlook. You need Outlook only to open or import the converted PST.

Yes. The software runs on Macs that use Windows through Parallels Desktop. It also runs on ARM/AMD-based Windows PCs.

Follow these steps to migrate an OLM file to Microsoft 365 using Stellar Converter for OLM Technician:

  • Launch Stellar Converter for OLM Technician.
  • Click Browse to select the OLM file.
  • Click Convert to start the conversion.
  • Preview the converted mailbox items.
  • Click Save Converted Mailbox on the Home menu.
  • Under Save Options, select Microsoft 365, then click Next.
  • Sign in with your Microsoft 365 credentials, then click Save.

The software exports the selected items to your Microsoft 365 account, preserving the folder structure from the OLM file.
Note: Before migrating, register the application in Microsoft Entra ID (Azure AD) to enable secure access to your Microsoft 365 account. See the step-by-step guide in the user manual.

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