What is OLM File? Definition, Structure, Viewer, and Recovery Explained

By lousy harry 02-02-2026 75

Let us know what is OLM file stands for. OLM stands for OUTLOOK FOR MAC, and it refers to a proprietary file used by Micorsoft outlook for macOS. It stores the mailbox data locally and works as a personal data storage container for Microsoft Outlook for Mac.

Definition of OLM Files

OLM FILES defines as a proprietary and personal data storage container file used by Microsoft Outlook and macOS.

What is OLM File's Structure/ Format?

Email ( INbox, Sent, Draft, etc.)
Contact
Calender
Task
Attachment
Journal
Notes

What are Mac Outlook OLM Files?

If an individualexportst the emails from Outlook on a Mac. It creates an .olm file. For your better understanding, let’s take an example: you are using Microsoft Outlook on a Mac.

You have emails, contacts, and calendar events in Outlook.
You want to save a backup or move this data to another computer.
You click Export in Outlook for Mac.
Outlook will create a file name as MyEmail.olm.

What is OLM Email?

OLM email refers to Email messages that are stored in the OLM files, which are used by Microsoft Outlook for mac os. Let’s take an example: you receive an email in Outlook on Mac.

You export your mailbox.
The email is saved inside a file named backup.olm.

That email inside the backup.olm is called an OLM Email.

How to search for OLM files on Mac?

Firstly, open the Finder.
Then click on the search button.
After that type .olm
Select a Mac system.
Finder will show all the files on the Ma.c

Now, after discussing the search for .olm files on mac the main question that comes to mind is, HOW TO OPEN OLM FILES?

How to Open OLM Files by Using Microsoft Outlook?

Firstly, open Outlook for Mac
Then go to tools and click on it
Then select import
After that, go for choosing Outlook for Mac archive
Go for the browse and select the .olm files
After that, click on import

This is how your email, contacts, and calendar will show up in Outlook. For a better understanding, let’s take an example:

You are using Outlook on a Mac
You saved your email as offlicemail.com

Steps you follow:

Open Outlook for Mac
Go to Tools > Import
Select Outlook for Mac archive (.olm)
Chooss OfficeMail.olm

This is how emails, contacts, and calendar now appear in Outlook.

Let’s have a look at who the OLM files view?

OLM files are the software tools that allow access to open and read OLM without the outlook for Mac. Using SysTools OLM Viewer software, you can easily provide all the information an individual needs to understand all about the .olm files.

WHY DO WE NEED OLM FILE VIEWERS?

We need an OLM file view to work on Microsoft Outlook on mac and it cannot be opened directly on Windows. And one can view the email without editing it.

WHAT OLM FILES VIEWERS DO?

Here comes what .olm files viewers do;

Open .olm file

Read .olm file

Viewing attachments

See folder structure( sender, inbox..)

Let’s take an example: an individual is on Windows but doesn’t have Outlook for Mac. Then one has to install .olm file viewers and then open mailbackup.olm, and one can easily read the attachments and email.

WHAT IS OLM FILES RECOVERY?

OLM files recovery refers to the procedure of storing the corrupted, damaged, lost, or deleted Outlook for Mac so that .olm files and email or other mailbox data can be accessed smoothly.

WHY IS OLM FILE RECOVERY IMPORTANT?

Why we need .olm files recovery is important as .olm files can be corrupted or damaged due to system crash, accidental deletion , or Mac failure. Because of the reason mentioned above, recovery plays a major role in recovering the data, email, and mailbox for Mac. You can recover the OLM data using SysTools OLM converter tool by converting it into different file formats effectively.

WHAT ARE THE DATA THAT CAN BE RECOVERED?

Emails

Attachments

Contacts

Calendar

Jounals

Notes

Tasks