How to Open OLM File on macOS?

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An OLM file is a data file created by Microsoft Outlook for Mac that stores emails, contacts, calendars, notes, and other mailbox items. It is mainly used for backup and migration of Outlook for Mac data.

TL;DR: To open an OLM file on macOS, import it using Outlook for Mac via Tools → Import → OLM file. If Outlook is unavailable, use a dedicated tool like Cigati OLM Viewer for Mac to easily view OLM file data without Outlook.

If you have an OLM file and want to open it on macOS, there are two simple methods you can try.

Method 1: Open OLM File Using Outlook for Mac​

If Outlook for Mac is installed on your system, you can directly import the OLM file.
Steps:

1. Open Outlook for Mac.
2. Go to the Tools tab.
3. Click Import.
4. Choose Outlook for Mac archive file (.olm).
5. Select the OLM file from your Mac and click Import.

After importing, you can access your emails, contacts, calendars, and other items from the On My Computer section in Outlook.

Limitations:

• Requires Outlook for Mac to be installed.
• Cannot preview OLM files independently.

Method 2: Use a Professional OLM Viewer (Recommended)​

If you don't have Outlook installed or only want to view the OLM file without importing it, a third-party viewer is a better option. You can use Cigati OLM Viewer for Mac to open and preview OLM files easily.

Key Features​

• Open OLM files without Outlook installation
• Preview emails with attachments
• Supports large OLM files
• Displays mailbox items like emails, contacts, calendars, etc.
• Simple interface for quick access

This tool is useful for users who want to quickly read OLM files or analyze mailbox data without configuring Outlook.