Corbett
Corbett OLM to PST Converter opens Outlook for Mac OLM files on Windows and saves a PST file that Outlook opens, in bulk or for chosen folders only. Folders, attachments and dates stay intact, and Outlook for Mac does not need to be installed. Try free demo first.
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Works offline on your PC. Corbett never sees your OLM files or messages.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Demo converts 10 emails per folder
Quick answer
An OLM to PST converter opens Outlook for Mac OLM files and saves a PST file that Outlook opens. Corbett OLM to PST Converter does that offline on Windows, so your mail opens in Outlook.
What it opens
Single OLM files, Folders of OLM files, Outlook for Mac archives
What it saves
PST first, plus EML, MBOX, PDF, HTML
Who uses it
Outlook for Mac users and admins moving or archiving mail
Conversion scope
An OLM file is the archive that Outlook for Mac exports. PST is the file Outlook imports and opens. OLM to PST converter reads Outlook for Mac OLM files on Windows and saves a PST file that Outlook opens, with your OLM files left as they were.
Kept in output
5OLM input types
4Outputs
10Not needed
4The OLM archive is the only export Outlook for Mac offers
Microsoft guide to exporting Outlook for Mac items to an archive file says an OLM archive is the only export option, and that support for legacy Outlook for Mac ends in October 2026. Outlook for Windows does not open an OLM archive. OLM to PST converter saves your Mac mail as a PST that Windows Outlook opens, and leaves the OLM as it was.
Related pages: OLM Converter, PST Converter, OLM to MBOX Converter, OLM to PDF Converter and MBOX to PST Converter. Other mail files sit on email converter tool page.
Core features
Five screens of Corbett OLM to PST converter software, in conversion order.
Source files
Select Open, then Email Data Files, and add your OLM files. OLM to PST converter loads your mail into its panel, and no Outlook for Mac is needed.
A spare PC with no Outlook for Mac still works. OLM to PST converter reads your files and leaves them as they were.
Batch loading
Select Choose Files for one OLM file or a few. Select Choose Folders to load an entire directory of OLM files in one step.
Loaded mail appears in one tree with a checkbox beside every item, so OLM to PST converter handles many OLM files in a single session. No file size limit applies.
Message preview
Click any message and a reading pane opens beside five analysis views. Use them to confirm correct mail before OLM to PST conversion starts.
Content shows the email body. Message header lists From, To, Subject and Date. Properties reports item data, while hex and raw message views show the stored mail.
Output formats
Select PST under Email Files in the Export menu. The same load also exports EML, MBOX, PDF and more, and the menu lists Gmail, Office 365, IMAP and Thunderbird for sending mail into an account.
Search by keyword first, then save only matched items. Quick search highlights hits in yellow, and Advance search checks every field or only name, subject, To, Cc and content.
Export options
Switch on open folder after export, skip greyed out folders, create empty folders and include email headers. For PST output, create an individual PST file for every folder, so every PST stays small and easy to open.
Select Browse to choose a destination, then Save. Live progress shows every folder as it converts, and Open Folder takes you to your PST output.
Working process
Four steps take your OLM files to PST. Try them on a few files in free demo first.
Add your OLM files
Start OLM to PST converter, select Open, then Email Data Files and add your OLM files. Select Choose Files for one file or Choose Folders for many.
Preview and select mail
Your OLM folders load as one tree. Click any email to preview it, tick what you need and search by keyword to trim your OLM to PST conversion.
Choose PST output
Select Export, then PST under Email Files. EML, MBOX, PDF, HTML, TXT sit in the same menu for other jobs.
Save your PST output
Set options, select Browse for a folder and press Save. Live progress shows every folder, and Open Folder takes you to your PST output.
Moving the result into Outlook is covered in Import PST to Outlook and Open PST file.
Working process
Prefer text? Open Import PST to Outlook for the next move with your finished PST output.
Advanced options
Small options that save hours when you convert OLM files in bulk with OLM to PST converter.
Bulk OLM input
Many OLM files convert in one session
Folder hierarchy
PST output follows your OLM tree
No file size limit
Any OLM size and mail count converts
Five preview views
Content, header, properties, hex and raw message
Advance search
Name, subject, To, From and content fields
Quick search
Yellow hit highlights in the preview
Chosen items
Convert contacts, addresses or attachments only
Attachment extraction
Save attachments alone, any size
Email address extraction
Save addresses to their own file
Empty folders option
Keep the full tree, even with no mail
Cloud upload
Send mail to Gmail, Office 365 or IMAP
USB and NAS targets
Save output to external drives and network storage
Output formats
OLM to PST converter saves mail as PST, and the same load exports more targets. Match your format to where your mail will open.
PST
A file Outlook opens, with one file per folder as an option
EML
One file for every message
MBOX
One file per folder for Thunderbird and Apple Mail
Readable pages for filing and records
HTML
Messages that open in any browser
TXT and CSV
Plain text and sheets of mail details
Gmail, Office 365 and IMAP
Mail lands in the target mailbox
Any drive
Local, USB and network folders
Free demo
Test OLM to PST Converter on a Real OLM File
Install free demo, load a OLM file and choose PST. Free demo converts 10 emails per folder, so your output is quick to check.
Download free demoTry before you buy
Free demo of OLM to PST converter opens, previews and searches your full OLM file. Only conversion is capped.
| Feature | Free demo | Full version |
|---|---|---|
| Open OLM files and folders | Yes | Yes |
| Preview and search | All available | All available |
| Emails converted per folder | 10 | Unlimited |
| OLM size and mail count | Conversion stops at 10 per folder | No limit |
| Price | Free | From $99 one time |
Use cases
Anyone who holds OLM mail that will not open where needed.
Outlook for Mac users switching programs
OLM to PST converter saves mail as a PST file that opens in Outlook, so your mail opens in Outlook.
IT admins
Convert a folder of OLM files to PST in one batch and hand every user a ready tree.
Legal and compliance teams
Save mail with headers and attachments intact for review and discovery.
Archive keepers
Convert OLM files that only one program opens into PST that more programs read.
Anyone with old OLM archives
Open a Mac archive on a Windows PC and save it as PST.
Selective exporters
Search by sender or subject and save only the matching emails.
Why Corbett
No subscription
Lifetime price from $99
Works offline
No sign-in and no upload
Originals stay safe
OLM files open read only
envelope-fill
No Outlook for Mac needed
No size limit
Any OLM size and mail count
Folders kept
Folders and subfolders stay in order
Smart search
Name, subject, To, From and content
30-day refund
Money-back window after purchase
Before conversion
OLM to PST converter converts OLM files into PST. Here is what that covers and where it stops.
| Capability | Supported | What it means |
|---|---|---|
| File to file conversion | Yes | OLM to PST, EML, MBOX, PDF, HTML, TXT and more |
| Folder tree | Kept | PST output follows your OLM folders |
| Outlook for Mac installed | Not needed | Files open on a PC with no Outlook for Mac |
| Source OLM files | Read only | Output goes to a new folder and your originals stay as they were |
| Internet and passwords | Not needed | Conversion works offline on local files |
| Calendars, tasks and notes | Check output | Mail is the focus, so other item types may stay in the source file |
| Mac and Linux | No | OLM to PST converter installs on Windows only |
Manual route or tool
Here is where the manual route stops, and where OLM to PST converter takes over.
| Job | Manual route | OLM to PST Converter |
|---|---|---|
| Cost | Free | From $99 one time |
| One email | Open and save by hand | Works too |
| PST file output | Not offered in Outlook | Full PST file |
| Many OLM files | Slow and error prone | Folders of OLM files in one session |
| Folder tree | Often reshuffled | Same as the source |
| Search before export | Basic search only | Name, subject, To, From and content |
| Outlook for Mac installed | Often required | Not needed |
Global recognition
Users rate Corbett OLM to PST converter 4.6 out of 5 from 683 reviews, and these software directories list it.
CNET
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TopSoftware Advisor
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Uptodown
Specifications
Download details
System
Supported editions
Windows 11 (64 bit), 10, 8 and 7 in 32-bit or 64-bit, plus Windows Server 2016, 2012 R2 and 2008.
Start OLM to PST converter with administrator rights.
Corbett has built Windows email utilities since 2020. Setup trouble and first-use questions go to our support desk.
User testimonials
OLM to PST converter shares 683 reviews on software index sites and customer feedback.
Collected across 683 reviews from software indexes and customer feedback. Three reviews below are unedited.
I wanted to convert my Outlook for Mac OLM files into PST format as soon as possible. One day, my colleague recommended me to download OLM to PST converter by Corbett. I gave it a try and it worked very well. I am quite satisfied with the tool.
Ultimate OLM to PST converter tool works very well. It helped me to convert the entire folder of OLM files into PST without taking much time. The conversion took place easily and without any hassles.
I am very satisfied with the tool and the features that it offers. It allows me to convert OLM to PST quickly. Initially I had some problems with the toolkit, but their support team helped me sort them out. Satisfied purchase.
Before conversion
Three short checks keep your OLM to PST conversion clean.
Make a OLM copy
Back up your OLM files on a safe drive before you start. OLM to PST converter opens files read only, and a spare copy keeps the original safe.
Choose all mail or chosen items
Convert every folder at once, or limit the job to the folders and items you need.
Leave space for output
PST output needs free room on the destination disk, and one PST for every folder keeps files small.
Want other routes from Mac Outlook? Read Outlook for Mac export to PST.
Best practice
A conversion only helps if your mail arrives complete. Four habits keep your data safe through it.
Back up first
Copy your original OLM files before you start. Keep 3 copies on 2 types of media with 1 copy off site.
Start with one file
Convert one small OLM file with OLM to PST converter and open a few emails in PST. Catch a wrong setting before a large job.
Check the count
Compare the message count in the folder tree with the mail in your output before you close the job.
Keep originals until checked
Store your source OLM files until counts match. Delete them only after you open converted mail.
Common questions
OLM to PST converter steps, formats, limits and licence answers.
An OLM to PST converter opens Outlook for Mac OLM files and saves a PST file that Outlook opens. Corbett OLM to PST Converter does that offline on Windows, so OLM file converter needs no Outlook for Mac.
Open OLM to PST converter, select Open, then Email Data Files and add your OLM file. Preview your mail, select Export, then PST under Email Files and press Save.
Yes. Load the OLM archive and OLM to PST converter reads it on Windows, with no Mac and no Outlook for Mac needed.
Not directly. Convert the OLM with OLM to PST converter, then import or open the PST in Outlook.
Yes. Choose the individual PST option and every OLM folder saves as its own PST, so files stay small and easy to open.
Yes. Tick the folders you need and search by name, subject, From, To or date, then save only those items to PST.
Yes. EML and MBOX sit under Email Files in the same Export menu, next to PST.
Yes. Headers stay with every message, and the Include email headers option adds them to the output.
Yes. Select Choose Folders and load a directory of OLM files, then OLM to PST converter converts every file in one session.
Yes. PST output follows the order of your source folders, and the Create empty folders option keeps folders that hold no mail.
Yes. Attachments stay with every message, and a separate option saves attachments alone with a file extension filter for specific types.
Yes. Advance search filters by name, subject, To, From and content, and OLM to PST converter converts only matching mail.
Yes. Click any message and five views open: content, message header, properties, hex and raw message.
Yes. Gmail, Office 365 and IMAP sit in the Export menu. Sign in to the target account and the mail lands there.
No. OLM to PST converter sets no size cap, and batch mode takes many files at once. Keep free disk space for your output.
No. OLM to PST converter reads OLM files on its own, so it works on a PC without Outlook for Mac.
No. OLM to PST converter opens your files read only, and output goes to a new folder.
No. Conversion happens on your PC with no upload. Corbett never sees your OLM files or messages.
No. OLM to PST converter installs on Windows only. Copy your OLM files to a Windows PC and convert them there.
Free demo of OLM to PST converter opens your files, shows every folder and gives you every search and preview. Conversion stops at 10 emails per folder, enough to test your output before you buy.
Windows 11 (64 bit), 10, 8 and 7, plus Windows Server 2016, 2012 R2 and 2008. There is no macOS or Linux build.
Personal licence covers 5 machines for $99, Business covers 25 for $299 and Enterprise covers 100 for $499. All three are one time payments with lifetime validity, 24/7 support and a 30 day refund.
OLM guides
Every page below covers one OLM job and answers questions it raises.
Use the PST files
Other mail files sit on email converter tool page. Account moves use Email Migration Tool or IMAP Migration Tool, broken archives belong with email recovery software and email viewer software opens mail files free. Save a live account with Office 365 Backup Tool, Outlook.com Backup Tool or Gmail Backup Tool.
Get started
Test OLM to PST Converter on a spare OLM copy first. Full access is from $99 in a single payment, and refunds are open for 30 days.
Download free demo Purchase now
87.4 MB · Windows 11 to 7 and Windows Server 2025 to 2008 · 30 day money back