Can you explain the working steps of the MailDir Email Converter Tool?

Yes, here I will show you how the Maildir Email Converter works to convert Maildir++/Maildir emails Message:
Step 1: Download and Install the Maildir Email Converter
Step 2: And then, Click On Open Button to Select Root MailDir++/MailDir Folder location Then Click on Next Button
Step 3: Now scanning MailDir++/MailDir Message Folders – Click On Mail Dir on Message Folder, then show message preview.
Step 4: Click On Export Button to Start Saving process according to Select Export Option & Destination Path.