Carry out the step given below. Step 1: Add Maildir Folder to the Software Panel. Step 2: Choose the desired files from the folder. Step 3: Then select the Method of Maildir Dedupe Approach. Step 4: Choose a destination location to store the Final result. Step 5: Press the Extract button to initiate the procedure. The folder will open up instantly with the resultant file without any duplicates. Check the files.