Yes, you can import Outlook PST to iCloud Mail without using Microsoft Outlook by using a professional Aryson PST Converter tool. Manual methods usually depend on Outlook because PST files are native to Outlook, which makes migration difficult without it. However, specialized PST conversion software can open PST files independently and migrate data directly to iCloud Mail. These tools allow you to add PST files, preview emails and other mailbox items, and then transfer emails, contacts, calendars, and attachments straight to your iCloud account using secure login credentials. They preserve the original folder hierarchy, support large or multiple PST files, and offer features like date filters and duplicate removal for accurate migration. Another advantage is that such tools work even if Outlook is not installed on your system. This makes the process faster, safer, and more user-friendly, especially for non-technical users. Therefore, using a dedicated PST to iCloud Mail migration tool is the most practical and reliable way to import PST files without Outlook.