You can convert MBOX to Maildir manually using Dovecot commands. Some users also use Thunderbird or Linux CLI tools.
But manual methods need technical knowledge. They are also time-consuming for large mailbox files.
A simpler alternative is the RecoveryTools MBOX to Maildir Converter.
The tool can batch convert multiple MBOX files to Maildir format. It automatically creates Maildir folders like cur, new, and tmp.
Some useful features:
Bulk MBOX conversion support Maintains folder hierarchy Preserves attachments and metadata Simple graphical interface Works offline on Windows and Mac Free demo version available
The process is very direct. Just add MBOX files, choose Maildir as the saving option, and start conversion.
It is a good option for non-technical users who want to avoid complex Dovecot commands or Linux scripts