Step 1 : Login to the Plesk panel with the user credentials.
Step 2 : Go to Mail , select the respective Email address and select the Forwarding tab option.
Step 3 : Select the Switch on mail forwarding checkbox.
Step 4 : Enter the email accounts in the separate lines that want to receive the forwarding mail and Click OK.
Step 5 : To prevent forwarded email copies from being stored in your mailbox, uncheck the “Mailbox” option and save changes.