With GainTools Maildir Converter, one can convert Maildir/Maildir++ files into 7+ file formats. Let us know, how to operate this program.
Know How Maildir Converter Converts Maildir/Maildir ++ Files?
To perform the conversion, initially open this software and properly launch it on your Windows system.

Maildir Converter Software Interface
After this, Browse Maildir files which you want to convert.

Browse Maildir Files
Once the files are added, get their list and numbers available on the screen. Now, pick desired Export options provided by the software such as PST, EML, MSG, MBOX, EMLX, HTML, MHTML, or PDF.

Select Exporting Option
After file format selection, use given Browse button and mention your desired location for saving converted files.

Select Destination path
Go for option Convert Now. This begins converting Maildir files into your selected file format.

Convert & Save
Your Maildir files have been successfully converted to your desired format. You can now access your converted files from the specified location.