Corbett
Corbett OLM Converter turns Mac Outlook OLM files into 10+ formats, in bulk or by selection. Emails, contacts, calendars, tasks, journals, notes and attachments convert with folder hierarchy intact. PST, EML, MBOX, PDF, CSV, vCard and ICS output is included, and so is upload to Gmail and Office 365. Free demo included.
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The OLM file is processed on this PC. Corbett never receives it.
Free demo, scanned clean on VirusTotal and a 30-day money-back window.
Lifetime licence from $99 Demo converts 10 emails per folder
OLM facts
An OLM file is the archive Outlook for Mac keeps, and Windows apps cannot open it. OLM Converter loads that archive on a Windows PC and outputs emails, address books, calendars and tasks in formats any system accepts.
Carried over from OLM
Supported OLM data
Outputs
Not part of conversion
Why Convert OLM Files
Windows Outlook, Gmail and Office 365 do not accept OLM. After OLM Converter finishes, a Mac mailbox lands in PST, MBOX or a cloud account with the same folder tree and the same read and unread counts.
Core features
Install, load the OLM file, preview and export.
Load
On Windows, start the software and follow Open, Email Data Files, Mac OLM File. Select the OLM file to load it into the dashboard.
Folder selection
The software scans the OLM file and lists data folders in the preview panel. Mail, contacts, calendars and tasks sit in one tree.
Message preview
OLM Converter shows any item in five views before export. Admins and forensic investigators use them to verify mail.
Selective backup
OLM Converter gives every item type its own search fields, so contacts, calendars, journals and tasks filter on their own terms.
Output options
Click Export, select a format or a cloud account, set the filters and press Save. OLM Converter sends contacts to CSV or vCard and calendars to ICS.
Before converting
Three habits keep a Mac mailbox tidy.
Source file
Copy the OLM file over
Export the archive from Outlook for Mac 2011, 2016 or 2019 and copy it to the Windows PC. A 10 GB file is fine.
Cloud upload
Have the app password ready
For Gmail, Office 365 or another IMAP server, only the email address and an app password are needed.
Run mode
Launch as Administrator
Launch OLM Converter with Run as Administrator on Windows 11, 10, 8 or 7.
Pulling out single items is covered in Extract attachments from OLM files and Extract email addresses from OLM file.
Free demo
Free Trial of OLM Converter
The trial exports 10 emails from every folder. Test the files in the target client, then decide on a licence.
Download free demoBefore purchase
A Mac can sync one mailbox through an IMAP account, one folder at a time. A big OLM archive or a mixed set of items is quicker in OLM Converter. The table compares both.
| Task | Manual move | Tool |
|---|---|---|
| Cost | Free | $99 one time |
| One small mailbox | Sync through an IMAP account | Works too |
| Large OLM file | Slow sync | Any size |
| Contacts and calendars | Separate exports | CSV, vCard and ICS |
| Folder hierarchy | Often reshuffled | Kept intact |
| Filters | Mail search only | Mail, contacts, calendars, tasks |
| Other formats | None | PST, EML, MBOX, PDF, HTML |
| Item extraction | Not offered | Addresses, attachments, photos, phones |
Only the green row is work that a Mac can do alone.
A spreadsheet route for contacts is shown in Convert OLM to CSV files .
Specifications
Download details
System
Supported editions
Windows 11, 10, 8 and 7 in 32-bit or 64-bit, plus Server 2016, 2012 R2 and 2008.
Start with Run as Administrator. No macOS build.
Corbett has built Windows email utilities since 2020. Technical questions reach the support team by live chat or email, 24/7.
Working process
Prefer text steps? The Import OLM to Gmail accounts post follows a cloud upload from start to finish.
Common questions
Steps, editions, file size and the demo.
Download OLM Converter, launch it on Windows and open Email Data Files, Mac OLM File. A preview of the emails appears. Then click Export, select a saving option, set data filters and press Save.
Yes. Several data filters let you convert chosen OLM emails alone.
All editions of Mac Outlook OLM files, including Outlook for Mac 2011, 2016 and 2019.
Yes. It converts an OLM file of any size without errors, so a 10 GB archive is fine.
The demo is for testing. It converts 10 OLM emails from every folder, and the licensed edition removes the cap.
Yes. The folder structure of the source file stays intact, and read and unread counts match the original.
Yes. Contacts convert to CSV and vCard (2.1, 3.0 and 4.0), and calendars convert to ICS.
Yes. Provide the email address and an app password. The tool supports 100+ IMAP servers and web clients from Google and Microsoft.
Yes. The tool can pull out email addresses, attachments, phone numbers and contact photos separately.
No. The software runs alone and needs no other application for conversion.
Windows 11 (64-bit), 10, 8 and 7 in 32-bit or 64-bit, plus Windows Server 2016, 2012 R2 and 2008.
A licence covers a single user. Personal, Business and Enterprise editions are sold.
Corbett refund policy applies, with a 30 day window for money back requests.
At least 4 GB RAM, 100 MB free on the hard disk and an Intel Pentium at 1 GHz, or 2.4 GHz for better speed.
Yes. The team helps 24/7 through live chat and email.
Step by step
Posts that cover Mac Outlook data and its next stop.
OLM mail destinations
Cloud mailbox jobs go through the Email Migration Tool . Server cutovers use the IMAP Migration Tool. Further formats are listed in the email converter tool. Damaged archives go to the email recovery software. Free viewing of mail files is offered in the email viewer software. Same family: OLM to PST Converter and OLM to MBOX Converter. Also see the OLM to PDF Converter, MSG Converter Tool, PST File Converter Tool, MBOX Converter and Office 365 Backup Tool.
User testimonials
1,758 ratings from users who converted Mac Outlook data with OLM Converter.
Collected across 1,758 reviews from download portals and email, shown exactly as sent.
I have been searching for the reliable tool which can convert OLM files to multiple formats. Fortunately, I came across the Corbett OLM converter tool which is undoubtedly wonderful with excellent features. It allows to convert the OLM files into multiple formats without any hassles. I am happy with this tool.
I have used many Mac OLM converter tools but so far it has not given the desired results. The main problem was data integrity. However, this Corbett solution is the best because of the simplified GUI and active customer support.
It is quite a reliable solution, Corbett OLM converter helped me to export selected data from Mac OLM to document format. This software provides multiple data filters to classify data for selective conversion.
Get started
Download the demo, open a Mac archive and test the results in the planned client. One $99 payment buys the full licence.
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47.6 MB · Windows 11 and Server editions · 30 days money back