Step 1 : Login to the Plesk panel with the user credentials.
Step 2 : Open Mail and select the Mailing Lists section.
Step 3 : Click the Create Mailing List option.
Step 4 : Type the main address for the mailing list.
Step 5 : To add an account as a subscriber to the mailing list, type their email addresses one by one in a separate line.
Step 6 : For setting an email notification for the subscribers, check the Notify administrator on the mailing list creation option and click OK