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How to Convert Apple Mail (MBOX) to Outlook 2016, 2013,2010 or Office 365?

Eric Simson  | Updated on December 29, 2020 | MBOX File   | 12 Comments   | 7 min read

Summary: This blog will describe different methods, with step-wise instructions, to convert Apple Mail MBOX file into Outlook 2016, 2013, 2010 or Office 365. It will also outline some key differences between these methods that can help you in making the best choice based on your requirements.

Apple Mail is the default email client that comes with every Mac running OS. It provides a number of features that make it one of the most widely used and preferred email clients for almost all Mac users. However, situations may arise that mandate converting Apple Mail data to Windows Outlook/Office 365.

For example, when you are migrating from Mac to Windows platform, your organization is going back to the Windows platform from Mac, or you received an MBOX file with important emails from your client but you have only Windows Outlook on your system to access the emails in it, etc

Instant Solution: Try Stellar Converter for MBOX software for safe and error-free conversion of Apple Mail .mbox file to Outlook PST file. The technician variant of the software also allows exporting Apple Mail data directly to Office 365 in just a few clicks.

But, Apple Mail supports MBOX file format which is not supported by Windows Outlook. And so, you will need to convert MBOX format to Outlook compatible PST format. 

Methods to Convert Apple Mail MBOX to Outlook/Office 365

Method 1 – Use Eudora and Outlook Express

Eudora is an email client that can be used on both macOS and Windows OS. So, you can convert Apple Mail MBOX file to Eudora compatible MBX file format. Next, transfer the converted file (MBX) to Outlook Express, and finally import the file into Outlook.

Step 1: Import Apple Mail Data to MBOX File

  1. Run Apple Mail on your Mac.
  2. Click File>Import Mailboxes.
apple mail to Outlook 2016

Step 3: Select Files in MBOX format under ‘Import data from:’, and then click Continue.

apple mail to Outlook 2016

Step 4: In the window that appears, browse the location of the MBOX file by clicking Choose, and then click Continue.

Step 5: Once the MBOX file is imported, click Done

Step 4: Click Done when the process gets over

apple mail to Outlook 2016

Step 2: Change MBOX File Extension in Eudora

Now change the imported MBOX file format to Eudora supported MBX file format.

  1. Install and run Eudora application.
  2. Firstly, change the extension of the imported (MBOX) file. For example: abc to abc.mbx.
  3. Move abc.mbx file name to a directory in which Eudora stores its files by default, which is located at the following location:

(C: Documents and Settings<user>Application Data\Qualcomm\Eudora)

4. Open Eudora and double click abc.mbx to create the file.
5.Close the Eudora application

  1. Close the Eudora application.

Step 3: Transfer Imported Data from Eudora to Outlook Express

In this step, you need to transfer the Eudora data to Outlook Express. For this, do the following:

  1. Open Outlook Express, go to File, click Import, and then select Messages.
  2. Select Eudora from the list of email applications, and then click Next.
  3. Browse the location to select abc.mbx file, and click OK.
  4. Click Next, again Next and then Finish.

Step 4: Import Messages from Outlook Express into Windows Outlook

Note: The following instructions for importing Outlook Express messages into Outlook only applies to Outlook 2010 and 2007.

Finally, import messages from Outlook Express into MS Outlook. To do so, perform the following:

  1. In Windows Outlook 2010, click File >Open >Import.

Note: In Outlook 2007, click File>Import and Export to open the Import and Export wizard.

  • Select Import Internet Mail and Addresses from the Import and Export wizard, and then click Next.
  • Select Outlook Express 6.x, 5.x, 4.x or Windows Mail option.
  • Ensure that Import Mail has been checked, and then click Next.

After executing the above steps, you can access the data from Apple Mail in Outlook 2010 and 2007. In order to convert Apple Mail data to Office 365, follow these steps:

  1. Export the imported file to Outlook PST file.
  2. Export PST file to Office 365 account by using Network Upload.

Read this: How to convert MBOX to Office 365?

Method 2 – Use Stellar Converter for MBOX Software

Use Stellar Converter for MBOX Technician software to convert Apple Mail to Outlook 2016, 2013, 2010 or Office 365, in a few clicks.

Follow these steps to perform the conversion by using the software:

Step 1: Download, install and run the software on Windows system.

Step 2: In Select MBOX dialog box, select AppleMail Email Client.

Step 3: Next, select the file that needs to be converted. You can select either a single file or multiple files

Step 4: Once the files to be converted are selected, click Convert to initiate the process.

Step 5: The scanning progress window is displayed. When the scan finishes, click on any item to preview it before converting.

Step 6: Once satisfied with preview of mailbox data, select the Apple Mail items you want to convert, and click Save Converted File on Home menu.

Step 7: In the Save As dialog box that pops-up, choose Outlook Profile.

Step 8: Click OK when the conversion completed message box appears.

The Apple Mail data will be converted to Outlook (2016, 2013, & 2010).

To learn how to convert Apple Mail MBOX file to Office 365, refer to this link.

Method 3 – Configure a Gmail Account

Another manual workaround that can help you move Apple mailboxes to Outlook requires configuring a Gmail account in Apple Mail and Outlook. Here’s how:

Step 1: Enable IMAP Access in Gmail

Note: Skip this step if you already have an IMAP-enabled Gmail account.

  1. Sign in to your Gmail email account.
  2. Once you’re logged into Gmail, open Settings. 
  3. In the Settings page, click the Forwarding and POP/IMAP tab, and select the Enable IMAP option.

4. Click Save Changes.

Step 2: Add IMAP-enabled Gmail Account in Apple Mail

  1. Open Apple Mail, click Mail, and then select Add Account.

2.Choose Google as your Mail account provider, and then click Continue.

Figure 11: Choose a Mail account provider

3.Enter your Gmail login credentials in the dialog box that pops-up.

Figure 12: Sign in to Gmail

4. Select all or specific apps you want to use with the Gmail account, and then click Done.

Figure 13: Select the Mail app

Your Gmail account will get added to your Apple Mail application.

Step 3: Move Items from Apple Mail to Gmail Account

  1. Create a new folder in your Gmail account.
  2. Select the Mac Mail items you want to convert, and then click Copy to for copying the selected items to the new Gmail folder.

Step 4: Add Gmail Account in Outlook

Now add the IMAP-enabled Gmail account (that you added in Mac Mail email client) in Outlook on Windows PC. To do so, perform these steps:

  1. Open Outlook, and click File>Add Account.

Figure 14: Outlook Account Settings

  • In the dialog box that pops up, type your Gmail address, and click Connect.

Figure 15: Connect Gmail Account

  • Enter password to sign in into your Gmail account.

Figure 16: Log in to Gmail

You can view the folder containing your Apple Mail items in Outlook after successfully adding the Gmail account. To transfer Apple Mail data to Office 365, refer to this link.

Method 1 vs Method 2 vs Method 3: Which One is Better?

Method 1, i.e. Use Eudora and Outlook Express, is a free method. But, this method requires you to install Eudora and Outlook Express applications on your system. Also, it involves too many steps, which makes it a tedious and time-consuming process. Plus, it may result in loss of data integrity.

Method 2, i.e. Use Stellar Converter for MBOX software, offers a quick and easy solution to export Apple Mail to Outlook 2016, 2013, 2010 and Office 365. The best part is that the software helps perform direct export of MBOX file to Outlook, without the fear of losing data. Also, it helps maintain data integrity. Plus, the free trial version of the software is available that can help you ascertain the effectiveness of the software. It provides free preview of converted mailbox items.

Method 3, i.e. Configure a Gmail account, is a workaround you can use to import Apple Mail mailboxes into Outlook. It is also a free method. But, it can be difficult to execute, confusing and time-consuming, as it requires to perform too many steps. Chances of human error (such as accidental formatting or deletion of data) are high. Also, Gmail restricts copying of mail items and attachments.

Methods to Convert Apple Mail to Outlook: A Quick Comparison

Parameters↓Method 1: Use Eudora and Outlook Express  Method 2: Use Stellar Converter for MBOXMethod 3: Configure a Gmail Account
Speed & ConvenienceIt is time-consuming and requires performing multiple steps to convert Apple Mail data to Outlook/Office 365.The software UI makes the conversion process simple & quick.It is time-consuming and difficult to execute process.
Directly exports MBOX file to Outlook Profile/Office 365NoYesNo
Require Technical Know-HowYes  NoYes
Multiple File Saving OptionsNo (Can convert Apple Mail data file to MBX format)  Converts Apple Mail (MBOX) to Office 365, PST, EML, RTF, HTML and MSG formats.No
Data IntegrityIt can result in loss of data integrity.  Ensures conversion while preserving data integrity.It may cause data inconsistency.


As you are now aware of the advantages and disadvantages of both the manual methods and third-party tool: MBOX to PST Converter Technician version by Stellar, you can choose the one that you think would best serve your purpose. Well, it is suggested that you use this third-party software as it offers a number of advantages and easily converts Apple Mail MBOX file to Outlook 2016, 2013, 2010, Office 365. Plus, you can use its demo version to have a better understanding, and that too at a zero cost.

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