Experts rated OLM converter software to convert Mac Outlook OLM files into 12 popular formats in just a few clicks. Effortlessly convert OLM file emails, contacts, calendars, tasks and notes with all attachments. No Mac Outlook installation required and original OLM file stays safe.
Nothing to sign up for and nothing leaves the machine. The trial runs against a real archive before any purchase.
Eleven things the OLM converter preserves through a conversion from folder hierarchy to read status and attachments.
Mac OLM converter allows users to add any size OLM file in the software panel. It scans the browsed OLM files automatically and lists them all with their file path and size. Simply verify all browsed files and manage.
User can verify all browsed OLM files and remove unwanted files from software panel. For this choose remove file option. Simply select OLM file and hit Remove button. It helps in converting required OLM files.
OLM converter for Mac is capable of managing folder order of Inbox, Drafts, Deleted Items, Junk, Outbox and any custom or smart folders leave the OLM in the same arrangement they went in, nesting included.
OLM converter performs all operations in read only mode, so headers, timestamps, read and unread status, category and priority flags stay untouched. Hashing the file before and after conversion shows it was never altered.
The software is capable of managing attachments in their native formats. Documents, images and inline graphics. It provides different management options for different export types.
Mac OLM converter allows users to export distribution lists and group contacts and save it into selected file format alongside individual records, rather than being dropped for being awkward.
OLM converter is a standalone software for convert Mac Outlook archived OLM files. It does not require any supporting application and environment to perform conversion. Nothing else has to be installed for the conversion.
The whole conversion happens on the local machine. Nothing is uploaded, no account is created and no server is needed for OLM conversion. It ensures data security and integrity as the conversion process runs on the local system.
OLM file converter tool does not impose any file size limitation. A multi gigabyte OLM file is handled in same way as a small one. The software efficiently handles large size OLM file and enables all export options.
User can save the exported OLM file at any location on internal or connected storage devices. The destination folder is set at export time. The OLM converter defaults to a sensible location so a finished run is easy to find.
OLM converter writes a report listing item counts per folder alongside the settings used. Compared against the source tree, it verifies the conversion without opening a single message and stays as a record of what was done and when.
Advance Settings holds the controls of OLM conversion: Customize output file as per requirements.
OLM converter software enables two different options to browse Mac Outlook archived OLM file i.e., Add File and Add Folder.
Scanning is an optional feature in the OLM converter tool. After choosing this option a pop up will appear asking for scanning time, simply hit Yes button. Apart from this choose either Export All Folders or Export Select Folder(s).
Mac OLM converter tool is capable of converting OLM files into multiple email and document file formats. Simply choose one at a time.
Screenshots of the Mac OLM Converter from adding a file to the final export.
Mac OLM converter writes twelve output formats, covering mail clients, review platforms and spreadsheets.
| Format | Opens in | Choose it when |
|---|---|---|
| PST | Outlook on Windows and Exchange import | The other side runs Windows Outlook and wants a mailbox, not files |
| MBOX | Apple Mail, Postbox, Thunderbird, SeaMonkey, Entourage | A move to a Mac or Linux mail client |
| EML | Windows Live Mail, eM Client, Zoho Mail, Roundcube, The Bat | One file per message, easy to script against |
| EMLX | Apple Mail | Dropping messages straight into a Mac Mail store |
| MSG | Outlook on Windows and Mac | Individual messages that need to stay openable in Outlook |
| Any reader, any review platform | Disclosure, archiving or anything that needs bates numbers | |
| HTML | Any browser or text editor | A readable archive that needs no mail client at all |
| MHT | Any browser | One self contained file per message with images kept inside it |
| TXT | Anything | Plain text extraction for indexing or search |
| CSV | Excel, Numbers, any database import | Contacts that are going into a CRM or a spreadsheet |
| VCF | Any mail client, iOS and Android | Address books moving to a phone or another client |
| ICS | Apple Calendar, Google Calendar, Outlook | Calendar entries that need to keep their recurrence rules |
Outlook on Windows will not import an OLM file, although it is compatible with PST. No setting in either application bridges this gap. So the archive has to be converted before a handover to Windows is possible. The October 2026 deadline behind many of these conversions is set out in legacy Outlook for Mac end of support.
An OLM from a machine that is no longer available stays unreadable until it is converted. So does one written under a lapsed licence. The OLM converter opens it again without any Microsoft software installed. The structure of the format is covered in what is an OLM file and its associated data.
Disclosure, an audit or an internal investigation means handing over readable copies with the metadata attached. A paginated PDF with bates numbering is usually what the requesting side has specified. The OLM converter is capable of changing the Mac Outlook OLM file into a researchable document.
Apple Mail, Thunderbird and Postbox all read MBOX, so that format is the route into any of them. For a webmail account the usual path is MBOX first then an import on that side.
An OLM is not kept on disk by Outlook for Mac by default. It exists only after File then Export was run, saved wherever it was chosen at the time, usually the Desktop or Documents. A search for the .olm extension in Finder locates it on the volume. The live mail database is separate and is held inside Group Containers in the Library, which the converter does not read.
Add File takes a single OLM. Add Folder takes a directory and queues every OLM it finds. Each file is listed with its path and its size. A scan prompt follows: accepting it builds the browsable tree the next step uses, declining it goes straight through.
Export All Folders sends the whole archive. Export Selected Folders opens the tree for ticking individual folders. Advance Settings stands alongside both and holds the split size for PST output, the category types to include and the date range.
OLM converter supports twelve export types. Select one, keep Maintain Folder Hierarchy ticked unless the output should be flattened, then set the destination path. Export starts from there. The completion report verifies the output against the source.
What the Mac OLM Converter needs on the machine before installation. Below that is what the OLM converter reads once installed.
No. Nothing from Microsoft has to be on the machine, neither the application nor a licence for it. The Mac OLM converter runs standalone.
The free OLM converter trial version loads OLM file and exports 100 sample of the file data, which shows whether the output is correct before any purchase.
None. Size only affects how long the opening scan takes. But it is advised to launch MacXTools OLM converter on higher configuration system.
No. OLM converter reads the container without writing a byte back. The result goes to a separate destination folder. A hash taken before and after conversion matches, which is the evidence a reviewer asks for.
Yes. Batch mode queues every OLM in a directory and converts them in a single run, which suits a whole team moving at once.
Yes. Three controls stack: individual folders in the preview, a From and To date range and a restriction to particular item types.
The OLM converter software manages attached files separately. Attachments are written as openable files, address books become VCF or CSV and appointments become ICS with their recurrence rules intact.
Convert on the Mac. Moving a large OLM across a network or onto a USB stick is where files get truncated. A half copied OLM fails to open at the other end. Converting it where it was written and sending the output avoids that.
No. This build runs on macOS only. An archive already on a Windows machine is better handled by a Windows side tool, since moving it back to a Mac to convert adds nothing.
Every release from Outlook for Mac 2011 onward writes the same container, including the 2016 and 2019 builds. Later versions have not changed it in a way that matters, so age of the archive makes no practical difference.
A hundred emails per OLM file is enough to confirm the archive is intact and the output is correct. A file that turns out to be damaged rather than unreadable is identified at no cost.