How to Convert Mulberry to Outlook? – 2025 Update

Mulberry, once a reliable and highly regarded open-source email client developed by Cyrusoft in 1995, served users well across multiple platforms, including Macintosh, Windows, Linux, and FreeBSD. Known for its stability and advanced email handling capabilities, Mulberry was a top choice for many professionals and institutions. However, since development officially ceased in 2007, the software has not received any further updates, leaving it outdated in terms of modern security protocols, interface usability, and integration capabilities.
In contrast, Microsoft Outlook, especially as part of the Office 365 suite, has emerged as a top-tier email solution. It offers continuous updates, enterprise-grade security, and seamless integration with other Microsoft productivity tools. For these reasons, many former Mulberry users are now seeking to move their legacy data into Outlook.
This blog explores why migrating from Mulberry to Outlook is not only logical but essential in today’s digital landscape. It provides insight into the limitations of continued Mulberry usage, the advantages of switching to Outlook, and a practical guide for exporting emails and data from Mulberry into Outlook.
Why Outlook Is a Powerful Alternative to Mulberry
While Mulberry was once a reliable email client with support for essential features such as message management and Sieve-based filtering, its capabilities are now considered limited, especially when compared to modern platforms like Microsoft Outlook.
Outlook, part of the Microsoft Office 365 ecosystem, is a full-featured personal information manager that allows users to handle far more than just email. In addition to managing messages, it provides integrated access to contacts, calendars, tasks, notes, journals, and even chats, all from a unified interface. This makes it an all-in-one solution for individual professionals as well as teams across departments.
Outlook stands out with its intelligent email scheduling feature. Professionals who work odd hours or across time zones can draft emails late at night and schedule them to be sent the next day during business hours, without relying on external plugins. This ensures timely communication without disturbing recipients outside of work hours.
HR personnel, team leaders, managers, and employees alike can easily create and manage meetings, tasks, appointments, and contacts from a single panel. This functionality is particularly useful for scheduling interviews, tracking team responsibilities, or coordinating across departments, all from within Outlook itself.
How to Export Mulberry Emails to Outlook?
To migrate from the outdated Mulberry email client to Microsoft Outlook, the process involves two main stages:
- Extracting MBX (a variant of MBOX) files from Mulberry, and
- Converting those files into a format compatible with Outlook (PST).
Step 1 – Locate and Extract MBX Files from Mulberry
Mulberry stores email messages in MBX (MBOX variant) file format, which contains plain text messages in a single file. Before proceeding with the migration, you must locate and extract these files from your system.
Default File Locations for Mulberry Mailboxes:
For Windows XP:
C:\Documents and Settings\Administrator\Application Data\Cyrusoft\Mulberry\Mailboxes\
For Windows 7, 8, 10, or 11:
C:\Users\[Your Username]\AppData\Roaming\Cyrusoft\Mulberry\Mailboxes\
Tip: If you can’t see the “AppData” folder, make sure hidden items are visible.
Go to File Explorer → View → check Hidden Items.
Once you locate the Mailboxes folder, copy it and save it to a convenient location like your Desktop. This folder may contain multiple .mbx files (inbox.mbx, sent.mbx, etc.), which are your Mulberry email mailboxes.
Step 2 – Convert MBX/MBOX Files to Outlook PST Format
The MBOX to PST Converter is a fully standalone utility, meaning it doesn’t require any email application, like Mulberry or Outlook—to be installed in order to access or view your emails. Sounds surprising? It’s a common question, and rightly so. To see how it works firsthand, you can download the free demo version of the Mulberry to Outlook conversion tool.
This highly efficient and trustworthy software not only converts MBOX files to PST but also supports a wide range of export formats, including PDF, EML, MSG, OLM, Thunderbird, Yahoo Mail, Office 365, IMAP, and others. This utility allows users to convert and view their MBOX/MBX email files without needing to install either Mulberry or Outlook at the source or destination. So, if you’re planning to switch from your outdated email client and are concerned about issues like data loss, email corruption, or compatibility problems, this tool eliminates those worries. Instead of wasting time searching across the web, try this reliable solution that’s available at no cost and begin your migration with confidence.
Steps to Export Mulberry Emails to Outlook PST
Download and install the MBOX Converter on your computer.

Open the tool and click the Add Files button to load your MBOX file or folder.

Note: You can choose either Select Files or Select Folders based on your preference.
Choose the desired file or folder and click OK to continue.
The tool will scan the selected MBOX file and display all emails and folders on the left pane. Review your mailbox contents here.

After confirming the preview, click the Export button to begin the conversion.
From the list of available export formats, select PST for Outlook compatibility.

Click Browse to pick a location on your system where the converted PST file will be saved.

Once everything is set, click Convert to start the process.

After conversion completes, click OK to exit. Your emails are now ready to be imported into Outlook.

Import the Converted PST File into Outlook
- Once the conversion is complete, open Microsoft Outlook on your system.
- Go to File > Open & Export > Open Outlook Data File.
- Navigate to the location where you saved the converted PST file, select it, and click Open.
This will load your Mulberry emails into Outlook, completing the migration process successfully.
Mulberry to PST Tool – Effective Features and Benefits
- Wide Compatibility: This verified solution supports exporting Mulberry emails to all major Microsoft Outlook versions, including Outlook 2021, 2019, 2016, 2013, 2010, and 2007 (both 32-bit and 64-bit). The tool generates Unicode PST files, ensuring compatibility with large mailboxes and modern Outlook editions.
- Custom PST File Size: Users can set the maximum size limit for the resulting PST files to avoid common issues related to oversized PSTs, helping maintain stability and preventing corruption.
- Flexible PST Creation: Whether you prefer to create individual PST files for each Mulberrymailbox folder or a single combined PST file containing all folders, the tool gives you full control to choose the best option based on your needs.
- Batch or Selective Conversion: The converter can upload and process entire Mulberry email folders in one go, streamlining bulk migration. Alternatively, users can pick and choose specific files to convert, avoiding unnecessary data transfer.
- Customizable Destination Path: By default, the tool saves the converted PST files to the desktop for easy access. However, users can effortlessly modify the destination folder to any preferred location on their system.
- Complete Data Integrity: During the conversion, all critical email components such as email properties, attachments, headers, body content, and inline images are fully preserved, ensuring your data remains intact and usable in Outlook.
Frequently Asked Questions (FAQs) – Export Mulberry to Outlook for Mac & Windows
Q1: Why do users want to convert Mulberry emails to Outlook?
A: Many users find Mulberry a bit complex and challenging to manage, especially due to its limited spam filtering capabilities. Microsoft Outlook, on the other hand, offers a user-friendly interface and more efficient email management tools, making it a preferred alternative for Windows users.
Q2: Where are Mulberry mailbox files stored by default?
A: Mulberry mailbox files are typically stored in the following default locations:
- Windows XP:
C:\Documents and Settings\Administrator\Application Data\Cyrusoft\Mulberry\Mailboxes\- Windows 7, 8, 10, 11:
C:\Users\[Your Username]\AppData\Roaming\Cyrusoft\Mulberry\Mailboxes\(If you cannot find the AppData folder, ensure that hidden files and folders are visible in File Explorer.)
Q3: Can I install the Mulberry to Outlook Converter on Windows 11 or Windows Server 2022?
A: Absolutely! The software is fully compatible with the latest Windows operating systems, including Windows 11 and Windows Server 2022, as well as Mac OS.
Final Words!
With its wide range of features and benefits, Microsoft Outlook has become the preferred email client for many professionals. However, migrating emails from Mulberry to Outlook requires converting Mulberry’s MBOX files into Outlook-compatible PST format. To simplify this process, we recommend using CubexSoft Mulberry to PST Converter — a reliable tool that efficiently converts MBOX files into multiple formats, including PST, making the migration smooth and hassle-free.
