If you are trying to import MSG files into iCloud Mail without Outlook, the MacGater Mac MSG Converter is the most efficient professional solution. Since iCloud Mail does not natively support the Outlook MSG format, this tool acts as a direct bridge for seamless migration.

The software simplifies the process into three easy steps:

Add Files: Upload your MSG files or folders into the tool.
Preview: Select the specific mailbox folders you wish to transfer.
Migrate: Choose iCloud from the saving options and enter your credentials to start the process.
The Enterprise version of this tool is specifically designed to handle direct cloud migrations to platforms like iCloud, Zoho, and IMAP accounts. It ensures total data integrity, preserving all email properties, attachments, and folder hierarchies. With advanced features like duplicate removal and date-range filters, you can perform a clean, selective import. Compatible with all macOS versions, MacGater provides a hassle-free experience without requiring Microsoft Outlook installed.

Read Also: https://www.macgater.com/blog/import-msg-to-icloud-mail/