• Firstly, you have to download Maildir Export Tool and Launch it properly on your Windows machine. Open the software that exactly same as given below screenshot:

  

• Now, you can add the Maildir files for conversion with the following buttons: Select File >> Select File or Select Folder >> Open.

  

• After adding the files, you can go to choose the folders for conversion from the left panel of the software screen. Then, collect brief view of any inserted emails by clicking on it. Additionally, opt Save Attachment option available under preview section to save Maildir email attachments.

  

• Now, click on the Export option available on the top menu bar which opens a new Window of Export options for selecting the output formats to save Maildir files.

  

After selecting all the desired options and output location, click Next button