How to convert MBOX files of different email clients to Outlook PST?

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F.K.- Convert MBOX files

S.K.-  mbox file to pst,  import mbox file to outlook, convert mbox to pst manually, migrate from thunderbird to outlook

LSI- How do I convert Thunderbird to PST? convert apple mail mbox to pst file

Summary: Many users ask questions like How to convert MBOX files to PST  or how to import MBOX files to outlook? For this purpose, we have the best solution to migrate from thunderbird to Outlook and to convert Apple Mail to Outlook PST. In this blog, you find two manual approaches for converting MBOX files to PST. We have also mentioned a tool named MBOX Migrator tool to import emails to Outlook. But, before that let’s discuss the reasons to convert MBOX to PST.

Why do we need to Import MBOX files to PST?

There are some reasons to convert MBOX to PST manually are given below:-

  1. MBOX can store only email messages. On the other hand, Outlook PST can store different mailbox items like emails, contacts, calendars, notes, tasks, etc., and many more mailbox items.   
  2. Outlook saves data in a systematic manner. But the MBOX file has a single text file. 
  3. Outlook PST provides security features like safety from data loss, password protection, and Anti-spam.
  4. There is no worry about internet connection, you can work in offline mode in Microsoft Outlook. It also works with a poor internet connection. 
  5. Microsoft Outlook smoothly works on all Exchange servers. 

These are different motives, that we want to import MBOX file to Outlook. Next, we will know about manual techniques to convert MBOX files to PST 

How do I convert Apple mail MBOX to PST File manually?

To convert Apple Mail MBOX file to Outlook, we need to complete the four stages. These phases are mentioned below.

  1.  Convert Apple Mail files to MBOX
  2. Create an MBOX file by using Eudora
  3. Importing files to Outlook Express
  4. Import mailbox from Outlook Express to Windows Outlook.

Stage.1 Convert Apple Mail files to MBOX

First, we need to transfer data from Apple Mail to MBOX. 

  1. Open Apple Mail on your system.
  2. Go to file > Import Mailboxes.
  3. Click on the Continue button after selecting the MBOX file’s source.
  4. Press the browse button to provide the location of Output. Now, select the MBOX file and click on the Continue tab.
  5. After the transformation process is complete, click on Done.

Stage.2 Create an MBOX file by using Eudora

After converting the Apple Mail to MBOX, we need to create an MBOX file Because we cannot directly transfer data from Apple MBOX to PST.

  1. Change the extension of the imported file for example abc to .abc mbx
  2. Move abc. mbx to the Eudora directory. The default location of the file:(C: Documents and Settings<user>Applicatio Data\Qualcomm\Eudora)
  3. Now, open Eudora, double-click on XYZ.mbx, and close the Eudora application. 

Stage- 3. Importing files to Outlook Express

Now, we need to Import messages to Outlook. 

  1. Open Outlook Express on your system.
  2. Go to File >> and choose import. 
  3. After that select the Options.
  4. Choose Eudora from the email application list and click on Next.
  5. Now, browse the location to select the .mbx file and click on OK.
  6. Then click on Next and again tap on the Next button. 
  7. Finally, press the Finish button.

Stage-4. Import mailbox from Outlook Express to Windows Outlook.

Now, we will transfer emails from Outlook Express to Microsoft Outlook.

  1. Open Microsoft Outlook to export files.
  2. Now, click on the File menu bar and choose Import and export option.
  3. Select Import Mail and Addresses and press on Next.
  4. Now, select Outlook Express 4. x, 5. x, 6. x, or Windows Mail and click on Next.
  5. Select the finish after the process is completed. 

Finally, you can find your imported mailbox in Windows Outlook. Let’s go for the second method.

How do I convert Thunderbird to PST?

To migrate from Thunderbird to Outlook, there are two stages:- 

  1. Migrate Thunderbird messages to EML 
  2. Convert the EML files to PST for free

Stage-1. Migrate Thunderbird messages to EML

  1. Open the Mozilla Thunderbird application on your system
  2. Select the mailbox folder.
  3. Now, select all the messages in the mailbox folder.
  4. Next right-click on any of the selected emails. 
  5. Then, click on the save as option.
  6. Now, choose a folder from your system to save Thunderbird messages as EML files.

Stage-2. Convert The EML files to PST for free

  1. Open MS Outlook on your system.
  2. Create a new mailbox folder
  3. Now, the open folder of EML files on the local system
  4. Select all the EML files, then drag and drop them into the newly created mailbox 


These are two techniques to convert MBOX files to PST manually. But, using manual methods has some drawbacks. There, are some limitations of manual methods given below to understand it. 

Limitations of Using manual methods

  1. During the conversion process, there is a high chance of data loss convert MBOX to PST manually. the Original folder structure doesn’t remain the same while converting the MBOX files. 
  2. In the manual process, there are some applications that are required to transfer MBOX data.
  3. It takes so much time to complete the manual procedure. 
  4. The process is so difficult, and that’s why a non-technical person cannot easily migrate MBOX files by using the above traditional techniques.

These all are limitations of using manual methods. Thus, experts always advise using professional methods to Migrate MBOX files. So, I have mentioned an automated technique that will help you to transfer MBOX data.

Professional Methods To Convert MBOX Files

To make your task easy to export data from MBOX files to PST.  You can try the software MBOX Migrator, this tool will help you transfer data from MBOX files to PST. This software has a simple Graphical User Interface that makes it easy to use. This professional way saves time because it can easily work and gives satisfactory results. Moreover, the automated way makes it easy to maintain the original folder structure during the conversion. 


In this blog, we learned the reasons, why we use Outlook PST over MBOX. For this purpose, we have mentioned two manual techniques for the conversion of MBOX files. But, manual steps are soo lengthy and confusing. So, I suggest you use a professional solution to make your task easy. You can choose any of the methods according to your choice. Thanks for your patience reading, hope you found your solutions here in the blog.

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