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How to Convert MSG to OLM Format for Mac Outlook?

  Rollins Duke
Rollins Duke   
Published: April 24th, 2025 • 5 Min Read
In this write-up, we will show you a complete guide to convert MSG to OLM using one of the best and safest solutions. Users want to change *.msg to .olm file extension for Mac Outlook editions. So read the complete article to get the best answer for conversion.
Table of Content Hide
  1. What Is an MSG File Extension?
  2. What Is an OLM File Extension?
  3. Free Download MSG to OLM Converter
  4. How to Convert MSG to OLM Files?
  5. Steps to Import Resultant OLM to Mac Outlook
  6. Features of MSG to OLM converter
  7. Frequently Asked Questions
  8. Final Thoughts
Read Also – Secure Way to Convert Multiple MSG Files to PST

What Is an MSG File Extension?

MSG is a file extension, which allows saving the email message, contact, appointment, task, etc. An MSG file is created with Microsoft Outlook, dragged dropped drag and drop from Outlook to the local computer. An MSG file contains plain ASCII text for headers and the message body can contain plain ASCII text as well as attachments and hyperlinks. MSG files are also compatible with programs, which use MAPI (Microsoft’s Messaging Applications Programming. An MSG file uses the message subject as the name of the MSG file.

What Is an OLM File Extension?

OLM file is known as Mac Outlook archived file format, Mac Outlook 2021, 2019, 2016, and  2011 editions give the facility to export email messages including contacts, journals, attachments, notes, tasks, etc. to OLM Mac Outlook archive file format. An OLM file can be easily imported to Mac Outlook by using an IT solution.

Recommended: Best Software to Convert MSG Files to PDF Format

Free Download MSG to OLM Converter

Just download the Best MSG Converter Tool for Windows and Mac, which gives an isolated option to convert .msg to .olm format. Thereafter, users can easily access resultant OLM files with Mac Outlook. One of the best features of this software is that it supports the batch conversion of MSG files to OLM format so users can easily combine multiple MSG files into a single OLM file.

How to Convert MSG to OLM Files?

  1. After download and installation, run MSG to OLM Converter. Click on the Select Files… or Select Folders… option to choose MSG files.
    MSG to OLM Converter
  2. Select the folder including MSG files from your computer.
    browse folders
  3. This screenshot is showing the path of the selective folder. Select the required files and click on the Next button.
    select required files
  4. Select OLM as the saving format from the listed file extension.
    select OLM
  5. Select the destination path and click on the Convert button to start MSG to OLM conversion process.
    Convert MSG to OLM
  6. Wait for the completion of the task and thereafter see conversion process has been completed successfully.
    How to convert MSG to OLM
  7. After completing the conversion process, it will automatically open the destination path. Get the resultant OLM files now.
    Resultant OLM

Note: Using above mentioned steps, anyone can easily convert .msg to .olm file extension. Thereafter, you can access converted OLM files with Mac Outlook personal information manager program. Let’s know all steps.

Steps to Import Resultant OLM to Mac Outlook

For Mac Outlook 2011

  • Run Mac Outlook 2011 on your Mac machine and choose the File >> Import option.
  • After that choose Outlook Data File (.pst or .olm) option and click on the right arrow to continue.

For Mac Outlook 2016-2021

  • Start Mac Outlook 2016-2021 and press the Tools >> Import button as shown in the screenshot.
  • Now choose Outlook for Mac archive file (.olm) option and click on the Continue button.

Features of MSG to OLM converter

  • Convert MSG to OLM including attachments and other email items.
  • Dual modes to choose MSG files i.e., Select Files… or Select Folders.
  • The tool creates standard OLM file for Mac Outlook 2021, 2019, 2013, and 2011.
  • This application permits to the conversion of MSG to OLM in bulk.
  • Also, the tool maintains folder and subfolder structure while converting.
  • The tool offers the facility to choose the destination path to save converted data.
  • This tool is compatible with all Windows as well as Mac OS Machines.
  • This application has the option to save resultant data at the same source location.
  • There is no file size limitation to convert .msg to .olm extension.
  • Free demo edition to evaluate the tool before purchasing the full edition.

Read Similar: Batch Convert MSG to MHT without Outlook

Frequently Asked Questions

Ques 1 – How to convert MSG to OLM file?

Ans – Go with the below-mentioned steps to convert .msg to .olm.

  1. Start MSG to OLM Converter on your machine.
  2. Insert Outlook MSG files into software GUI.
  3. Choose the required MSG files and press Next.
  4. Set destination path to store resultant OLM.
  5. Press Convert to start the MSG file to OLM conversion.

Ques 2 – Does internet connectivity mandatory to convert .msg to .olm Mac Outlook archive format?

Ans – No, internet connectivity is not mandatory to convert .msg to .olm format.

Ques 3 – Can I install this MSG to OLM software on a Mac OS-based computer?

Ans – Yes, the updated edition of Outlook MSG to OLM Software is compatible with all the latest Mac OS editions. Hence, all MacBook and iMac Computer users can easily install it.

Final Thoughts

MSG to OLM converter is a professional software, which is helpful to open MSG files in Mac Outlook. The tool comes with a free trial edition, which is helpful to evaluate the tool before investing money. The software converts a maximum of 25 MSG files to OLM format so that users can easily know the working procedure of the tool. After upgrading this software, users can save valuable time and effort as it gives permission to convert unlimited MSG files to OLM format at once.

Recommended: Guide to Convert MSG Contacts to CSV Format 

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