How to Import OLM File into Outlook 365?

Outlook for Mac uses the OLM file format to create and store a copy of all the exported Outlook for Mac mailbox data, like emails, contacts, calendar, tasks, etc., on a Mac. The OLM file format is only used by Outlook for Mac and is not supported by Windows Outlook or Office 365 configured in it. Hence, you cannot directly import an OLM file to Outlook 365.

To migrate data from an OLM file to Outlook 365, you will need to use a specialized OLM to PST converter tool. Hence, if you want to move your Outlook for Mac account data to Outlook 365, read further. Here, you will find the detailed steps to use an OLM to PST converter tool and a workaround to help transfer mailbox data from an OLM file to an Outlook 365 account.

What is the Need to Import OLM to Outlook 365

There are several reasons why users want to import OLM to Office 365:

• Outlook for Mac users switching from Mac to Windows.
• Access the mailbox data of old Mac users on a Windows PC.
• Back up important mailbox data on a Windows PC/Outlook for Windows.
• Share OLM files with a non-Mac user.

Import OLM File into Outlook 365 using OLM to PST Converter Tool

The simplest way to import an OLM file into Outlook 365 on a Windows PC is to convert the OLM file to PST file format. To do this, you can use a specialized OLM to PST converter tool, like Stellar Converter for OLM. The advanced tool swiftly scans the selected OLM file and converts it to an Outlook-importable PST file format.

Its advanced algorithms ensure 100% data accuracy during the conversion process. It also ensures that the converted PST file has the same mailbox folder hierarchy as in the source OLM file. You can use the built-in preview feature to verify the files and check their integrity. While saving the mailbox data, you can apply filters to exclude emails from specific senders or only save emails in the selected date range.

Apart from saving in PST file format, the tool lets you save the OLM file items in various other file formats, such as PDF, RTF, HTML, MSG, and EML. You can also use it to directly export the mailbox data to an existing Outlook profile or an Office 365 account. The software supports conversion of OLM files created using Outlook for Mac 2021, 2019, 2016, and earlier versions.

To import an OLM file into Outlook 365, download and install the Stellar Converter for OLM on your Windows PC and then follow the steps given below:

Note: Transfer the OLM file from your Mac to your Windows PC where you’ve installed the tool.

• Launch Stellar Converter for OLM.
• The Select OLM Mailbox window will appear. Click on the Browse button to select the OLM file.
• Once you have selected the OLM file, click on Convert. The tool will start scanning the selected OLM file.
• Once the tool has completed scanning the OLM file, you will see a list of all the mailbox items in a tree view structure. Select any mailbox item to see its preview.
• After previewing the mailbox items, click on Save Converted Mailbox in the ribbon.
• The Save File window will appear.
• Select the Export to Existing Outlook Profile option and click Next.
• The Select Outlook Profile and PST window will appear on the screen.
• Select the Profile from the given list and click Save.
• The tool will begin exporting the OLM file data to the selected Outlook profile. Once completed, the Conversion Completed dialog box will appear. Click OK to end the process.

Note: If you want to save the OLM file data in PST file format, you can select the Save as PST option in the Save File window.

Save OLM emails as EML Files.

Another way to import OLM files to Outlook 365 is to save OLM file emails as EML files on your Mac and transfer them to a Windows PC. It is suitable if you want to transfer a few emails from your OLM file to your Outlook 365 profile. Here’s the stepwise process:

Step 1: Switch to Legacy Outlook

The new Outlook for Mac doesn’t support the importing of OLM files. You need to switch to the Legacy Outlook. For this,

• Launch the Outlook for Mac app.
• Click on Help > Revert to Legacy Outlook.

The app will close and automatically restart to load the legacy Outlook.

Step 2: Import the OLM file into Outlook for Mac

Follow the steps given below to import the OLM file into Outlook for Mac:

• Click on File and click on Import.
• The Import wizard will open.
• Select the Outlook for Mac archive file (.olm) option. Click Continue.
• It will begin importing the selected OLM file into Outlook for Mac.
• Click on Finish to complete the process.

Step 3: Save OLM File Emails in EML Format

Now, follow the steps below to save the emails in an OLM file to EML format:

• Select the emails you want to import into Outlook 365.
• Click on File > Save as.
• Give the file a name, select the location where you want to save the file, and click on Save.

The required emails will be saved as EML files.

Step 4: Drag and Drop the EML Files into Outlook 365

Once you have saved the OLM file emails in EML format, move the EML files to the Windows PC where you have configured your Outlook 365 account. Then, drag and drop them into your Outlook 365 account.

Limitations of the Above Method

The above method has some limitations, such as:

• The process is lengthy and complex as it requires you to perform a number of steps.
• New Outlook for Mac doesn’t have the Import/Export feature. You need to switch to the Legacy Outlook to import the OLM file.
• This method is suitable for transferring only a few emails.

Conclusion

Outlook 365 doesn’t support the OLM file format. Hence, there is no direct way to import an OLM file into Outlook 365. The best way is to use Stellar Converter for OLM an advanced OLM to PST converter tool that allows you to import OLM files into an Outlook 365 account without any hassle. This tool also ensures that the mailbox data is transferred with 100% accuracy and the folder structure and hierarchy intact. Additionally, it can save the OLM file data in various file formats, such as PST, EML, PDF, RTF, etc.