Trusted Method to Import cPanel Emails into Microsoft 365?

Looking for a reliable way to move emails from a cPanel-based email account to Microsoft 365, and after trying several approaches, I realized that manual methods become difficult when there are thousands of emails, multiple folders, and years of important communication involved. Most cPanel email accounts use IMAP, which means messages are stored on the server and require a stable process to ensure that nothing gets missed during migration. Because of this, I wanted a method that could handle large mailboxes without affecting folder hierarchy, attachments, or email properties. While researching ways to migrate emails from CPanel to Office365, I found that using an IMAP-based approach is generally preferred because cPanel accounts are fully compatible with IMAP protocols. However, managing multiple accounts manually can consume a significant amount of time, especially when organizations have dozens of users. A solution capable of handling single as well as multiple mailboxes becomes more practical in such cases. One option I came across was the Aryson IMAP Backup Tool, which works with numerous IMAP-enabled email services, including Yahoo Mail, Outlook, AOL Mail, Microsoft Office 365, Zoho Mail, iCloud Mail, GMX Mail, ProtonMail, Amazon WorkMail, and many hosting providers that rely on cPanel email servers. Since cPanel accounts are IMAP-enabled, the software can connect directly with them and transfer mailbox data to Microsoft 365 while maintaining the original structure. What I found particularly useful is that the utility supports both individual account migration and bulk account processing using CSV files. For businesses handling multiple users, this feature can save a lot of effort because each mailbox does not need to be configured separately. In addition, the software provides advanced filtering options that allow users to migrate only specific folders or emails within a certain date range. This can be helpful when only recent emails need to be transferred instead of complete archives.
Another important consideration during migration is preserving folder hierarchy and metadata. In many cases, manual approaches result in missing folders or broken mailbox organization. Since email conversations often span several years, keeping the original structure intact is essential. The software also maintains headers, sender information, timestamps, and attachments throughout the process.
Large mailboxes can also create problems when migrated manually. Attachments increase mailbox size considerably, and interrupted transfers often require restarting the entire operation. Incremental backup capabilities help resume processes without downloading the same messages repeatedly. Duplicate detection also ensures that identical emails are not stored multiple times. I also noticed that some users migrate cPanel emails not only to Microsoft 365 but to platforms like Yahoo Mail, Outlook, AOL Mail, Zoho Mail, iCloud Mail, and GMX Mail. Since all of these are supported through IMAP connectivity, mailbox management becomes more flexible. The ability to export emails into PST, MBOX, EML, MSG, PDF, and other formats can also be useful for maintaining offline archives or compliance purposes.