How to Convert OLM files into MSG for Outlook - 2026 Guide

Summary: When your email data is stored in several file formats, and you have to go from one platform, like Mac Outlook, to Windows Outlook. Outlook for Mac doesn’t support straight export to MSG, and Windows Outlook can’t open OLM files. So, you need to convert OLM Data into MSG Format to open your emails on Windows. In this article, we will show you two solid ways to do this: The manual method and a professional OLM to MSG Converter Tool. Each approach also provides you with one quick and easy conversion.

Understanding OLM and MSG File Format

An OLM file is a single archive used by Outlook for Mac that contains your emails, contacts and calendars. However, MSG is a Windows Outlook file format that stores a single email message with all of its data. OLM is not available on Windows either. So the conversion is required for cross-platform access.

Why should you convert OLM to MSG?

• Windows Outlook supports.MSG files for viewing individual emails.
• MSG format makes it easy to organise and share individual emails.
• MSG files also have all the attributes of the original message, including attachments, subject line, timestamps, and metadata.

Does Outlook Support OLM Files on Windows?

“Does Windows Outlook Support OLM Files?” No, Windows Outlook does not support OLM files. OLM is an Outlook for Mac-only proprietary format. If you are using the Windows platform or trying to access OLM data in Outlook, then you need to export the OLM File to MSG.

How to Convert OLM File to MSG Manually

Unfortunately, there is no direct manual solution to convert your OLM to MSG. But you can do this across a couple of steps:

Step 01: How to Export OLM File from Mac Outlook:

• First, go to File > Export.
• Then choose to export Emails, Contacts and Calendar.
• Now, just save the OLM file on your platforms.

Step 02: Import OLM to Outlook for Windows (IMAP)

• Then, create a new IMAP email account, such as Gmail.
• Sync this IMAP account to your Mac Outlook.
• Then, switch all emails from your OLM inbox to the IMAP folders.
• Add the same IMAP account in Outlook for Windows.
• When you see the emails, you can drag and drop them into a local folder.

Step 03: Save Emails in MSG Files:

• Also, open the emails in Outlook for Windows.
• Then do File> Save As.
• Lastly, choose .msg as the format and save.

Professional OLM to MSG File Converter Tool

The simplest way to avoid the trouble and risk of manual process is to use an independent solution like this TrustVare OLM to MSG Converter. This utility helps you convert many OLM files to MSG format at once. It gives you 100% exact conversion with no loss of data. You will be able to preserve the original layout, folder structure and all email details like sender, date & subject during the whole conversion process. Moreover, this tool has a simple UI and several complex capabilities to make this conversion more reliable.

How to Convert Outlook OLM to MSG – A Complete Guide

1. Get the best OLM to MSG Converter Tool - Download.

2. Then, pick Select Files/Select Folder to add the OLM File. Click Next.

• Choose Files: Add a single file (Press again to add multiple files).
• Choose Folder: to choose an OLM Folder with additional files.

1. Further, you can check the OLM file you wish to convert and pick it.

2. Next, choose the MSG option from the list of formats.

3. Finally, apply custom features/filters as per your demands. Start Process.

Conclusion

In this technical blog post, we have described two major ways to convert an OLM file to MSG, either by utilising a manual method or a professional program. The manual approach is free to use and allows you to convert a few OLM emails. But it does have a number of drawbacks that make this conversion useless for many users. Hence, it is extremely advisable to opt for this expert tool for the error-free conversion. They give you a trouble-free conversion without any loss of data. Moreover, you may convert OLM to MBOX and other formats.