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Written By Amit Chandel
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Updated on July 22nd, 2025
“I’m trying to open some old emails saved in an OLM file from Mac Outlook, but I’m on a Windows laptop now. Someone told me converting it to HTML could help because it works in any browser. I just don’t want to lose anything, especially the attachments. Can anyone help me on how to do this safely?”
Convert OLM to HTML is something many users need when transferring from Mac Outlook. Unlike other formats, HTML files are simple to open; just double-click, and they open in your web browser. That makes them perfect for archiving, sharing, or viewing emails without any email client installed. Still, the challenge is doing it without losing parts of your emails, attachments, or structure. In this blog, we’ll show you different ways to get the job done, by the manual method or an MailConverterTools OLM Converter Tool, whether you have a few emails or large folders saved in your OLM file.
Turning OLM files into HTML is a smart move when you want quick access to your emails without depending on Outlook. It gives you the freedom to view messages anytime from anywhere.
Other benefits that users get:
There is no built-in option in Outlook for Mac to directly convert OLM files into HTML, so you’ll need to use different methods. Some users prefer manual methods because they are free but take time, while others depend on a professional tool for quicker results. We will discuss both approaches in detail:
If you don’t want to use any third-party tools, there are manual ways to convert your OLM file to HTML. These methods work when you have access to Outlook for Mac and only need to transfer a limited number of emails. They can be time-consuming and require extra efforts. Let’s see manual methods:
This method is helpful if you only need to convert a few emails and still have access to your Mac Outlook account. Follow the steps to complete the process:
You can repeat these steps for any other emails you want to convert.
This method is useful when you want to convert emails quickly without using any built-in export feature. Steps can be defined as:
This method is helpful when you want to convert an email into a web-readable format using PDF as a middle step. The procedure can be followed as:
Manual methods are too slow, require technical knowledge, and have a high probability of risk. That’s why using a dedicated tool is the best option. A trusted solution like the OLM Converter Tool helps you convert your entire OLM file to HTML format in just a few steps. There is no need to open Outlook or worry about attachments being lost. It easily handles large OLM files, maintains your folder structure exactly the same, and nothing is lost, including emails, attachments.
Now, follow the steps to complete the process:
Explore More: Convert OLM to MSG
Convert OLM to HTML makes it easy to access and manage your Mac Outlook emails, if you’re switching systems or just want to view them in a browser. Manual methods can help with a few emails, but they’re not suitable for multiple conversions. For a smooth experience and to avoid losing data or attachments, it’s better to use an expert tool that handles everything without any hassle.
ANS. Yes, you can. If you’re using a trustworthy OLM to HTML Converter, it easily handles large OLM files without any data loss or performance issues during the conversion.
ANS. Absolutely. OLM Conversion Tool maintains all your email attachments stay linked with their original messages, just like they were in Mac Outlook.
About The Author:
Meet Amit, an experienced SEO expert and content planner. He uses his creativity and strategy to create content that grabs attention and helps brands reach their goals. With solid skills in digital marketing and content planning, Amit helps businesses succeed online.
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