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How to Convert OLM to MSG Format in Bulk? Complete Guide

Published By Jamie Kaler 
Rollins Duke
Approved By Rollins Duke
Published On December 25th, 2023
Reading Time 7 Min Read
Overview: Are you looking to convert OLM to MSG format for use in a Windows environment? Want to know how to export Outlook for Mac emails to MSG file extension? If yes, then read this article which will give you an overview of how to accomplish it .olm file to .msg format.

OLM is the main file format for Outlook for Mac email clients. It is similar to Microsoft Outlook for Windows. The only difference is that it works on Mac machines only. On the other hand, an MSG file is how Microsoft Outlook stores a single email message.

This particular file format saves the email text, metadata, links, and attachments. Also, MSG files are handy so you can scan the bulk of files for viruses and malware.

Many times, users find it difficult to access their Outlook for Mac messages and intend to convert OLM to MSG. The reasons could be many-

Query 1– My organization is permanently migrating to a Windows environment. So, we have decided to export OLM files to MSG format. This will not only enable us to enjoy the various benefits of Windows Outlook, but we can share a particular message with anyone instead of an entire mailbox. So, MSG would be the most appropriate format. Do you have any ideas to accomplish this task?

Query 2– How can I convert OLM to MSG format in bulk? I have a Mac Book Pro in which Outlook 2011 is installed. Due to some reasons, I want to change to Windows Outlook. But I read somewhere that Outlook doesn’t support OLM files. Is there any technique that you are aware of solve this problem? Please suggest a reliable OLM to MSG converter.

Best OLM to MSG Converter: Expert Solution

Regarding the export of Mac Outlook emails to .msg file extension, you will require third-party software as there is no manual method to do so. The RecoveryTools OLM Migrator is an all-in-one product that gives the capability to convert OLM to MSG file format. It gives the option to execute bulk OLM files to MSG conversion. The best part is you don’t need any external application or plug-in to use the tool.

Get to Know More About Tool by Taking a Free Trial of Demo Edition.

Quick Steps to Convert OLM to MSG

  • Step 1: Download and run the tool.
  • Step 2: Upload the OLM files/folders.
  • Step 3: Check the required folders/subfolders.
  • Step 4: Choose MSG as a saving option.
  • Step 5: Select the location using the Browse icon.
  • Step 6: Hit the Convert icon to convert OLM to MSG.

How to Perform OLM to MSG Conversion? Step by Step

  1. Launch the OLM to MSG converter tool on your machine.

    OLM to MSG converter tool

  2. Upload the required OLM files and folders using the Select Files and Select Folders option and hit the Next icon.

    required OLM files

  3. All the data will appear on the panel, check the needed folders or subfolders, and click on the Next button.

    needed folders

  4. Choose MSG as a saving type from Select Saving Option.

    Select Saving Option

  5. Enable the File Naming Option (if required) to manage your resultant data.

    File Naming Option

  6. Choose the required storage location by clicking on the Browse button.

    storage location

  7. Lastly, click on the Convert button to convert OLM to MSG in bulk.

    convert OLM to MSG in bulk

  8. After the process, a confirmation message will appear, and hit the OK button.

    confirmation message

Best OLM to MSG Converter- Main Benefits and Features

  • Unlimited Conversion: This tool provides the facility to convert heavy-size OLM files. The OLM to MSG converter helps to export Outlook for Mac to MSG without any file limitations.
  • Includes Attachments and Metadata: During the conversion of OLM to MSG, the software ensures that it keeps intact all attached fields with it. That is, you can import Mac Outlook files to MSG with attachments, images, hyperlinks, sender/receiver details, subject, time, date, etc. It supports converting emails from any Outlook for Mac edition.
  • Selective Email Conversion: Once you have chosen the files to convert OLM to MSG, you can choose the desired email messages for conversion. You can de-select the unwanted messages to save time.
  • Fully Compatible with all OLM versions: One can use the OLM to MSG converter tool for all OLM editions like Outlook for Mac 2011, Outlook for Mac 2016, and Outlook for Mac 2019.
  • Retains Folder Structure: This software also preserves the folder hierarchy throughout the migration of OLM files to MSG format.
  • Dual Options to Select Data: The tool provides a double choice to choose the OLM files to convert OLM to MSG format. You can choose either of the files or folder options for bulk OLM data to MSG conversion.
  • Windows Compatibility: You can use this utility on Windows 11, 10, 8.1, 8, 7, XP, Windows Vista, Windows Server 2022, 2019, 2016, 2012, etc.

How to Convert OLM Files to MSG Format Manually?

Users can easily convert their Mac Outlook data files into MSG format by using any third-party email client like Gmail. All the steps are given below in detail.

Step 1: Import Orphan OLM to Mac Outlook

Important Note: If you have already uploaded, then skip this step.

  1. Go to File >> Import tab in Mac Outlook.


  2. Select “Outlook for Mac archive file (.olm)” >> Next icon.

    Outlook for Mac archive file

  3. Find your orphan OLM file from your system.
  4. Select the required data and hit the Continue icon.
  5. Choose the folder to import data and hit the Import icon.

Step 2: Configure Gmail in Mac Outlook

  1. Go to Preferences >> Accounts in Mac Outlook.

    confirmation message

  2. Hit on the “+” >> Email option.
  3. Put the login details and hit the Add Account option.
  4. And your Outlook accounts will connect automatically.

Now drag and drop or move your OLM to a connected Gmail email address. And then follow the next step.

Step 3: Connect the Same Account in Windows Outlook

  1. Open your Outlook icon.
  2. Click on the File tab.
  3. Choose the Add Account option.
  4. Put the login details of your same Gmail account.
  5. Enter the POP/IMAP details.
  6. Lastly, hit the Finish icon.

Now your all emails of OLM file will appear in connected Windows Outlook through a Gmail account. Now you can drag and drop the emails on a desktop screen and it will make an MSG file.

However, these methods have some drawbacks and limitations, which are explained below in detail.

Why Manual Methods are Not a Good Idea?

  • Users have to follow multiple steps, which makes this method more lengthy and time-consuming.
  • Also, you have to repeat the same process again and again for each email and OLM file.
  • Mac & Windows Outlook must be connected to the same machine with the subscribed account.
  • High risk of data loss, while moving your OLM file.


The above article, how to convert OLM to MSG format with the help of an advanced application called OLM to MSG Converter. You can check out the free trial edition. It will help you to evaluate the proficiency of utility. Later you can upgrade the license keys for unlimited Mac Outlook to .msg conversion. we have tried to provide complete information; hope you find the article helpful.