Convert OLM to CSV for Multiple Applications Using 3 Ways

Approved By Rollins Duke

Published On April 23rd, 2026

Reading Time 7 Minutes Reading

If you are finding an easiest way to convert OLM to CSV to get access to your OLM file data in Microsoft Excel, then don’t worry, this article shares top three best methods to export OLM to CSV. The manual methods and an automatic solution. Free methods require working knowledge of Legacy Outlook, Thunderbird, and eM Client. Secondly, these methods to convert OLM file to CSV are time-consuming and prone to human errors.

Smart users often choose a hassle-free, secure, & convenient offline solution to get the job done without facing any technical troubles on Mac systems. Whether they need to make a conversion of OLM to CSV for compatibility of OLM files, to keep them as backup, for sharing purposes, or to access OLM data in Excel. They chose only an automated solution to complete the conversion of OLM to CSV Mac.

The use of free methods for conversion of OLM file to CSV often fails to complete task, does not guarantee complete data integrity, and is not suitable for bulk processing. After knowing short information about manual methods, if you still want to use freeways, then be prepared to face the challenges of these workarounds to convert OLM to CSV free.

Manual Methods to Convert OLM to CSV Mac

In this guide below, we are going to use three third-party email clients to convert OLM to CSV, like Legacy Outlook, Thunderbird, and eM Client. Firstly, we import OLM file into Outlook. Then, we use Thunderbird and eM Client as a bridge to export OLM to CSV. We assume that the OLM file is present in your MacBook PC. Follow the steps below to complete the OLM to CSV conversion for free.

1st Method: Use of Thunderbird for OLM to CSV Conversion

This method has three steps, follow each detailed steps carefully to convert OLM to CSV.

1st Step: Import OLM files into Outlook Mac

Open Legacy Outlook on Mac Device.
Go to “File” option and select “Import” button.
After that, choose option “Outlook for Mac archive file (.olm)” & click on “Continue” button.
Now, browse stored OLM file on MacBook and hit “Import.”
Wait for a few minutes to complete import.

2nd Step: Configure Outlook Account with Thunderbird

Open Thunderbird application on Mac.
Then, hit “Gear” icon below, select “Account Settings” option, and click on “New Account.”
After that, enter the same account “Email Address” & “Password” of Outlook, and hit “Continue.”
Now, wait to complete “Sync” process.
Done, now your configuration process is completed.

3rd Step: Export OLM to CSV Using Extension ImportExportTool NG

Now, install “ImportExportTool NG” extension inside Thunderbird.
Choose the configured email “Folder” inside the Thunderbird account.
Then, right-click on account folder & select “ImportExportTool NG” button.
After that, select option “Export All Messages in Folder,” and choose “CSV Format.”
Finally, browse saving “Location” & hit on “Save” button.
Done! Your OLM file is converted in CSV format.

2nd Method: Convert OLM File to CSV Using eM Client Application

Download & Install eM Client from its official website for free.
Open eM Client on your MacBook.
Enter your Outlook email address and click on “Next” button three times.
Now, enter your password on browsing window and click on “Allow” button to grant permission.
After that, wait for few minutes to configure it fully.
Choose mailbox folder between “Inbox” or “Sent” and select all emails by pressing “Command (⌘) + A.”
Then, right-click on it and choose “Export List” option.
Finally, select option “Export to CSV” and browse the saving location for CSV files.
Done, your OLM files are converted to CSV format.

Drawbacks of Using Manual Methods to Convert OLM to CSV Free

Both free manual methods require users to configure an account, which requires a good internet connection to properly configure and sync.
To convert OLM to CSV, with use of manual methods, the users must have technical knowledge to complete the task.
Both methods require installation of Legacy Outlook, Mozilla Thunderbird, & eM Client.
The free manual solutions are time-consuming, prone to human errors, & accidental mistakes lead to account corruption.
Data integrity, folder structure, & email formatting are not maintained. Secondly, attachments and metadata are not preserved while using manual workarounds to convert OLM file to CSV.
If OLM file is heavy or large-sized, then both workarounds are not useful for both technical & non-technical users.

These were the drawbacks of free manual methods to export OLM to CSV.

How to Convert OLM to CSV on Mac with Automatic Solution?

The use of manual methods to convert OLM to CSV format is fine, but due to its unconditional limitations, it’s risky and takes time. However, whether you are a newbie, non-technical, or technical user, you can try secured, trustworthy OLM Converter Toolkit by MailsWare to convert OLM file to CSV without data loss in bulk at once. This OLM to CSV converter for Mac & Windows allows you to export OLM files accurately, with maintained data integrity and preserved attachments & metadata.

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Steps of Automatic Solution for OLM to CSV Mac

Open this tool on your Mac & hit on “Next.”
Then, select between “Select File” or “Select Folder” option & click “Next.”
After that, choose the necessary “Folders” from preview panel & hit “Next” button.
Now, choose saving option “CSV” along with “Destination Path.”
Finally, hit “Next” to convert OLM to CSV.
Wait for a few minutes, and the OLM to CSV converter for Mac will give you converted OLM files with a generated output report.

Benefits of Using OLM to CSV Converter for Mac

Using this tool, you not only convert OLM to CSV, but can also convert OLM to PST, MBOX, EML, TXT, HTML, & 29 other formats.
The tool allows users to convert OLM files selectively according to their needs for OLM files in CSV format.
You can convert OLM to PDF using the same tool to present OLM data in an admissible court.
This OLM to CSV converter maintained full data integrity throughout the conversion & kept the original folder structure in output file.
Software’s UI & UX make this easy to use for all types of users, such as technical, non-technical, & newbies.
The professional users utilize this software to convert OLM to Thunderbird for direct conversion of OLM files in Thunderbird.

Final Thoughts on Export OLM to CSV

At the end of this blog, on topic “How to convert OLM to CSV?” We had shared three methods to export OLM to CSV. In which there were two manual methods, which we found are time-consuming, risky, and prone to human errors. On the other hand, the suggested automatic solution provides the safe and accurate conversion of OLM to CSV with full data integrity and in bulk.

Now, it’s up to you which method you are going to use to convert OLM file to CSV.