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How to Convert MBOX to OLM Format? 

admin | email migration file conversion how to macos software technology | 4 minutes read | Last updated on May 26th, 2025,
mbox to olm

Summary: Are you searching for the best solution to convert MBOX files into OLM format? So, there’s no need to worry about it! In this blog post, we will discuss the best and effective ways to convert MBOX files into OLM file format. It is useful for Mac users. By following all these instructions, you will get the best and most reliable solutions of the conversion of MBOX files to OLM. The OLM file format is commonly used by Microsoft Outlook for Mac. 

At the present time, many users are continuously converting MBOX files into OLM files format. If users have large numbers of email in MBOX form and other email application such as Mozilla Thunderbird, Windows Live Mail, Windows Mail, and many more. So, it is important to import MBOX to Outlook Mac .

Main Reasons to Convert MBOX Mailboxes 

  • Support Bulk Conversion features, so all users may effortlessly convert single or multiple MBOX files into OLM format without facing any restrictions. 
  • The OLM file format is used by Microsoft Outlook for Mac. It is specifically used to preserve all Outlook data like contact, calendars, events and other information during the conversion process.
  • Also, the OLM file format offers better security features, so users can protect their email messages from corruption. 

How to Convert MBOX to OLM Format? (Manually)

With the help of manual method, users can convert MBOX files into Outlook for Mac. But, there is a high risk of data loss throughout the conversion of MBOX file to OLM format. In below section, we will explain the simple way step by step to convert MBOX to OLM free Mac without facing any problems. 

Convert MBOX files to Mac OLM via Mozilla Thunderbird

  • Download and launch Mozilla Thunderbird on your local system.
  • After that, create a new identity in Mozilla Thunderbird by using the IMAP email account. 
  • Next, download the ImportExportTools add-on in Thunderbird.
  • Now, Import MBOX to Thunderbird under the local folder.
  • After that, drag and drop the MBOX file into the configured Mozilla Thunderbird profile.
  • The MBOX files will be synchronized with the connected IMAP account.
  • After that, configure the same email account in Mac Outlook.
  • At the end, export the mailbox from Mac Outlook to the OLM file format.

Drawbacks of the Manual Process

  • The manual method is only beneficial for technically experienced users to perform this task. 
  • By using manual method, you have requirement to download Mozilla Thunderbird and ImportExportTool NG add-on on your system to convert MBOX file to OLM format.
  • The manual method is time consuming and long-lasting process for converting MBOX files into OLM format, so this is not compatible with professionals and business. 

How to Convert MBOX to OLM Format? (Professionally)

The MailDivert MBOX Converter is the best and most trustworthy platform to convert MBOX files into OLM format. It preserves all the email content of the entire data securely. The utility provides a quick and reliable solution to convert MBOX files into the OLM file format. Additionally, the tool is developed with a simple and user-friendly interface that can help both technical and non-technical users. Also, the software offers dual option to export MBOX files to OLM in single and bulk mode.

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Working Process of the Professional Approach

  •  First, install and launch the MBOX to OLM Converter Tool on your local PC.
  • After that, choose the MBOX files and folders that you want to convert.
  • The utility shows the list of selected MBOX files on its left pane.
  • Now, you can see all the uploaded file details on the preview panel.
  • After that, hit the export button and select the saving option as OLM format.
  • Next, choose the desired path, required sub options, then click on the convert button.
  • After clicking on the convert button, it will start the conversion of MBOX files to OLM.

Advantages of the Professional Tool MBOX Software

  • Offers batch conversion features, so you can easily convert multiple MBOX files into OLM at once.
  • Also, it provides a simple and interactive interface that makes the conversion process simple.
  • It manages all data integrity hyperlinks during the migration process.
  • Also, the tool allows you to select single and multiple files to convert into OLM format.
  • It provides multiple advanced filter options that will help you convert specific MBOX files into OLM format. 
  •  The software is works on both Windows PC and Mac operating systems. 

In-Short

In this post, we have described how to convert MBOX to OLM format. Additionally, we have explained the best and most prominent way to convert MBOX files into the OLM file format. By using the manual method, you cannot convert MBOX files into OLM format without technical skill. So, I would like to suggest to you a professional tool to effortlessly convert MBOX files into OLM file without facing any issues. The pro method offers the free trial option, allowing users to convert the first 25 emails from MBOX files into OLM files along with attachments.  

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