Reviewed by Shubham Dixit, Independent Expert in Email Forensics and Data File Conversion. Shubham is an external reviewer and not a PCDOTS employee.
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Trying to move your old Mulberry email into Outlook? Mulberry was a capable client in its day, but it speaks a different file language than Outlook. There is no direct import button, and pretending otherwise just wastes your afternoon. Here is the path that actually works, end to end.
Summary To import Mulberry emails to Outlook, export your Mulberry mailbox to MBOX, convert that MBOX to PST with PCDOTS Email Converter, then open the PST in Outlook through Open and Export. Outlook cannot read MBOX directly, so PST is the bridge that carries your folders and attachments across.
Why you cannot import Mulberry into Outlook directly?
The honest reason first. Mulberry and Outlook store mail in different formats, and Outlook has no option to open a Mulberry mailbox. Mulberry works in the MBOX style world, while Outlook keeps mail in PST files. Outlook simply has no Import MBOX button.
So the move is a 3 stage bridge, and every reliable Mulberry to Outlook route follows it.
| Stage | What happens | Format |
|---|---|---|
| 1. Export from Mulberry | Save the mailbox out of Mulberry | MBOX |
| 2. Convert | Turn the MBOX into an Outlook file | PST |
| 3. Import to Outlook | Open the PST inside Outlook | PST |
Understand that and the rest is just following each stage. Let us walk through them.
Step 1: Export your Mulberry mailbox to MBOX
Mulberry can export its mailboxes to the standard MBOX format on its own, which is the free first stage.
- Open the Mulberry email client.
- Select the mailbox you want to move.
- Use Mulberry’s export option to save the mailbox as an .mbox file.
- Choose a folder for the exported file, or create a new one to keep things tidy.
If your Mulberry data is on Linux or Mac, copy the exported MBOX file to a Windows PC for the next stage, since the converter that writes PST runs on Windows.
“PST is the right target for Outlook, but the conversion is where headers and attachments quietly break if the tool is sloppy. I always open the finished PST and check a few messages with attachments before importing. A clean MBOX to PST conversion keeps every header intact, which is what makes the imported mail trustworthy later.”
Shubham Dixit · Independent Expert, Email Forensics and Data File Conversion
Step 2: Convert the Mulberry MBOX to PST?
On a Windows PC, the PCDOTS Email Converter turns your Mulberry MBOX into an Outlook PST file with folders and attachments intact. The dedicated MBOX to PST converter does the same job on the same engine.
Step 2a: Launch and load the MBOX file
Open the converter, go to the Open menu, choose MBOX Files and browse to your exported Mulberry mailbox.
Step 2a: The converter home screen, ready to load the Mulberry MBOX.
Step 2b: Preview and select the emails
Every Mulberry message loads with a full preview. Confirm the data reads correctly and untick anything you do not want in Outlook.
Step 2b: Previewing the loaded Mulberry messages.
Step 2c: Export to PST and save
Open the Export menu, choose PST, set a destination folder and click Save. The conversion runs with progress on screen and produces a single PST file.
Step 2c: Exporting the Mulberry data to PST.
Step 3: Import the PST into Outlook
Now the easy part. Outlook reads PST natively, so this is built in and free.
- Open Microsoft Outlook.
- Go to File, then Open and Export.
- Choose Open Outlook Data File and select the PST you just created.
- Your Mulberry folders appear in Outlook’s folder pane, ready to use.
Step 3: Opening the converted PST inside Outlook.
If you would rather merge the mail into an existing folder instead of opening it as a separate file, the Import and Export wizard in the same menu lets you import items from the PST into your current mailbox.
Verify before you trust the move
A migration is done when the numbers match, not when the bar fills. Quick check before you retire Mulberry.
- Folder count. Every Mulberry mailbox should appear as a folder in Outlook.
- Message count per folder. Compare counts folder by folder, not just the total.
- Attachment spot check. Open a few messages with attachments in Outlook and confirm they open.
- Keep the MBOX and PST. Hold on to both files as a backup even after a clean import.
If your real destination is Microsoft 365 rather than desktop Outlook, the same PST can go to the cloud, the route we walked through in the import PST to Office 365 guide.
People also ask
Can Outlook open a Mulberry MBOX file directly?
No. Outlook has no option to open or import MBOX files. You convert the Mulberry MBOX to PST first, then open that PST in Outlook, which reads PST natively.
How do I export my mailbox from Mulberry?
Open Mulberry, select the mailbox and use its export option to save it as a standard .mbox file. That MBOX file is what you convert to PST for Outlook.
Why convert Mulberry to PST instead of another format?
PST is Outlook’s native mailbox format, so it imports cleanly with folders and attachments intact. Converting to PST is the most direct bridge between a Mulberry MBOX and Outlook.
Do I need Mulberry installed for the conversion?
Only for the export step. Once you have the MBOX file, the converter reads it directly on Windows, so the conversion to PST does not need Mulberry running.
How many emails can I convert for free?
Exporting MBOX from Mulberry and importing PST into Outlook are both free. The converter’s free demo handles 10 emails per folder so you can test the MBOX to PST step before buying the full edition.
The short version
So importing Mulberry emails to Outlook is a 3 stage bridge, not a direct import. Export the Mulberry mailbox to MBOX, convert that MBOX to PST on Windows, then open the PST inside Outlook. Outlook cannot read Mulberry’s format on its own, which is why the PST step exists. Verify your folder counts at the end and keep the source files, and your old Mulberry mail lives comfortably in Outlook.
Have you exported your Mulberry mailbox to MBOX yet, or is that your starting point?
