Step 1: Login to Plesk Panel using current username and password then click on Website & Domains
Step 2:Go to the domain name and click Mail.
Step 3: Select the email address.
Step 4: Go to the forwarding tab then check switch on mail forwarding,write any Email ID where you want to forward your message on Forward incoming messages to the following
e-mail address text area then click OK.
Step 6: Once forwarding is created, you could see it in the list of forwarded to another Email ID.