How to Import OLM to Claws Mail: A Complete 2025 Guide

Introduction

Hey, if you’ve ever tried moving your emails from Outlook for Mac OLM to Claws Mail, you know it’s not exactly a walk in the park. I’ve been there — juggling years of important emails trapped inside an OLM file and wondering how to get them over to Claw Mail without losing anything.

After a lot of trial and error, I figured out some pretty smooth ways to get it done in 2025. In this guide, I’m going to share what worked for me so you don’t have to waste time like I did.

Understanding OLM Files and Claw Mail

What Is an OLM File?

Okay, so OLM files are basically like a big suitcase where Outlook Mac packs all your emails, contacts, calendar entries — everything. But here’s the catch: OLM files are not supported in Claws Mail. It wants standard stuff like MBOX files.

Think of it like trying to open a suitcase with a key meant for a locker — it just won’t work unless you get the right key (or format).

What Is Claw Mail? Key Features That Make It Popular

I switched to Claws Mail because it’s fast, lightweight, and simple. It’s like that reliable old friend who doesn’t fuss but always gets the job done. It handles MBOX and EML files easily, which means once your emails are in those formats, you’re good to go.

Challenges of Importing OLM Files to Claw Mail

I won’t sugarcoat it — importing OLM files isn’t straightforward. I remember trying to drag and drop my OLM into Claws Mail, only to see nothing happen or get cryptic error messages.

The main problem is the incompatible format. Plus, these files can get pretty big and complex, so if you rush it, you risk corrupting your data. I learned that patience and the right steps are key.

How to Export OLM Files from Outlook Mac for Migration

Step 1: Backup Your Outlook Mac Data

Before doing anything, back up your Outlook Mac data. I made a copy of my OLM file and kept it safe on an external drive — just in case. Trust me, it saved me from panic later.

Step 2: Export OLM File from Outlook Mac

Here’s what I did:

• Open Outlook on Mac.
• Click File > Export.
• Choose what you want to export (emails, contacts, whatever).
• Save the OLM file somewhere easy to find.

It’s simple, but don’t skip the backup step!

Step-by-Step Guide: Import OLM to Claw Mail Without Data Loss

Step 1: Convert OLM to a Supported Format (MBOX)

Since Claw Mail can’t read OLM directly, you’ll need to convert it. I used a trusted tool called Softaken OLM to MBOX Converter. This dedicated software makes my Mac OLM files conversion fast, simple and secure. The Graphical user interface is really easy and simple to utilise. And converted MBOX files are easily accessed in all their supported email clients.

Steps to convert OLM files to MBOX for Claw Mail

1. Install the OLM to MBOX Converter Tool by Softaken
2. Browse & Upload .olm files for converting
3. Take a full preview of the added file
4. Now, choose the MBOX format from the file type
5. Lastly, select the desired path and press the convert button

Step 2: Import Converted Files into Claw Mail

Once converted to MBOX, just open Claw Mail, go to File > Import, select your MBOX files, and import.

The first time I did this, it felt like magic seeing all my old emails pop up perfectly!

Why Trusted Tool is perfect for OLM to Claw Mail Conversion

• Batch conversion (saves time)
• Keeps folder hierarchy (so you don’t lose organisation)
• No data loss or corruption
• Easy interface (no need to be tech-savvy)
• Good support if something goes wrong

Manual Techniques to Import OLM to Claw Mail (Free Methods)

Using Apple Mail as an Intermediate Step

If you’re on a Mac, Apple Mail can be a lifesaver:

• Import your OLM into Apple Mail (it supports OLM).
• Export emails from Apple Mail as MBOX.
• Import MBOX into Claws Mail.

It takes longer, but it saved me when I didn’t have Windows access.

Using IMAP Synchronisation Method

Another hack I tried was IMAP syncing:

• Set up a Gmail or any IMAP email in both Outlook Mac and Claws Mail.
• Drag emails from Outlook Mac to the IMAP inbox/folders.
• Wait for them to sync to the cloud.
• Open Claw Mail and let it sync those emails down.

It’s slower and needs a good internet connection, but it works without extra software.

Best Practices to Avoid Errors During OLM to Claw Mail Import

Backup Before You Start

I can’t stress this enough: always back up your original files. I learned this after losing some emails early on.

Verify File Integrity After Export/Conversion

Before importing to Claw Mail, open your MBOX or EML files in another mail client (like Thunderbird). This helped me catch errors before they became headaches.

How to Verify Imported OLM Emails in Claw Mail Successfully

After import, spend a few minutes checking:

• Are all folders there?
• Do emails open with attachments?
• Are dates and sender info correct?

If something looks off, double-check your conversion step.

Conclusion

I won’t lie — this process took some trial and error, but following these steps made my migration of Outlook for Mac emails to Claws Mail smooth and worry-free. Using an expert OLM to MBOX Tool is a fast and secure way rather than using a risky manual technique, and before starting backups, they are your best friends.

Now, it all depends on you which method suits your needs. I hope you get all your answers.

Frequently Asked Questions About Exporting OLM to Claw Mail

Can I Import OLM Files Directly into Claws Mail?

Nope, Claw Mail doesn’t support OLM files directly. Conversion is a must.

What Formats Does Claw Mail Support for Import?

Mostly MBOX and EML files.

Are There Any Free Tools to Convert OLM Files?

Manual methods like Apple Mail or IMAP syncing are free but take longer.

How Do I Avoid Data Loss During Migration?

Back up everything and utilizing a trusted OLM to MBOX tool

Best Tool for OLM to MBOX Conversion for Claw MAIL

Outlook OLM to MBOX Converter by Softaken is a trusted software, recommended by professionals.