Migrating Outlook OLM data to iCloud Mail on a Mac is possible, but it requires the right method. iCloud Mail does not support OLM files directly because OLM is a proprietary format used by Outlook for Mac. As a result, you cannot
import OLM file into iCloud Mail using built-in options.
The most practical solution is to use a professional OLM conversion and migration tool. A reliable utility such as Aryson
OLM file Converter helps overcome this limitation by allowing you to access OLM files and transfer mailbox data to iCloud Mail through IMAP. The tool securely connects to your iCloud account and migrates emails while maintaining folder structure, formatting, and attachments.
The process is straightforward: install the software on your Mac, add the OLM file, preview the mailbox data, select iCloud Mail as the destination, and enter your iCloud credentials. No Outlook installation is required.
This approach is safe, time-efficient, and minimizes the risk of data loss, making it suitable for both personal users and professional environments.
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