Step1: Navigate to cPanel’s Mailing Lists interface (cPanel >> Home >> Email >> Mailing Lists)
Step2: Select the mailing list and click on manage.
Step3: Click on Mass Removal option under Membership Management.
Step4: Select whether to send unsubscription acknowledgement to the user by clicking the Yes or No button.
Step5: Select whether to send notifications to the list owner by clicking the Yes or No button.
Step6: Enter the email address of the user below one by one in the given column.
Step7: Click on Submit your changes to finish.