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Written By Rohan Wiese
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Updated on January 28th, 2026
Let’s proceed further, and before discussing the solutions, let’s discuss the reasons behind this cause.
We are aware that OLM files in Outlook are desktop-based email clients that have fixed storage. It carries certain limitations, such as:
However, these are some of the reasons why users seek an option to migrate OLM to Microsoft 365. We will learn some methods that can ease the task of migrating Outlook for Mac into Microsoft 365.
As we must be aware, Outlook possesses different interfaces for both Windows and Mac. Let’s proceed and discuss the steps for both.
Note: Before proceeding with these instructions, make sure your Microsoft 365 account is configured on Mac Outlook, then execute these stepwise instructions.
Follow the steps, such as:
In the following parts, you will learn the step-by-step instructions for migrating the OLM mailbox to O365 for Windows.
As you know, there is no direct approach available to migrate OLM to Microsoft 365. Therefore, in order to do so, follow the two below-mentioned steps, which are as follows:
This PST file can be uploaded to Microsoft 365 using two manual methods: the Network Upload Method and the Drive Shipping Method.
Although this manual procedure is quite lengthy to follow, it also possesses multiple limitations. Let us further discuss these demerits in detail.
Some limitations of the manual methods are as follows:
Overall, to overcome the limitations of the manual approach, the user can choose the most recommended professional utility. Let’s discuss this tool in more detail.
The OLM Converter tool is the most reliable and efficient software for exporting Outlook OLM mailboxes to different file formats and multiple other email clients. For example, you can convert OLM to PST, MBOX, EML, and other file formats with attachments like Contacts, Calendar, Tasks, etc. Also, you can perform the conversion on OLM of any size; as such, there is no file size limitation for exporting the Mac Outlook mailbox. Let’s discuss the step-by-step instructions for this utility in further detail.
Read More: Import OLM To Outlook
In this blog, we have explained various procedures along with the steps involved in migrating OLM data files into Microsoft 365 and 16+ file formats. We have also elaborated on the manual method available for Mac and Windows users, although the complete procedure is quite lengthy, full of complexities, and fails for bulk conversion. However, we suggest users seek the best and most reliable alternative, such as the OLM Converter Software, to import OLM to Microsoft 365, in addition to several file formats and email clients. Moreover, you’ll also avail of the extra benefits of this utility.
Ans – Yes, by using the OLM Converter Software, we can easily import OLM files into Microsoft 365 without Outlook. This utility is a standalone application that doesn’t require Outlook installation for OLM conversion.
Ans – Yes, Through OLM Converter Utility, users can easily save OLM files to Microsoft 365 on Windows 11. Not only does it work on Windows 11, but it is also compatible with Windows 10/8.1/8/7, Vista, XP, and 2008/2003/2000.
About The Author:
Rohan Wiese is a content and website optimization expert who helps blogs and businesses grow organically. He specializes in enhancing content quality, improving site structure, and increasing online visibility through smart, practical, and easy-to-implement strategies that drive long-term results.
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