HOW TO SET UP EMAIL FORWARDING IN CPANELStep 1 - Log in to cPanel and click on Forwarders
Step 2 - Click Add Forwarder
NOTE: You can also use the Add Domain Forwarder which, if set up, will for example, forward every email sent to domain1.com to the equivalent email at a second domain (eg: (eg: emails sent to firstname.lastname@example.org will be forwarded to email@example.com )
Step 3 - Add the username you want to forward, select the domain (in the bellow pic, the email being forwarded is firstname.lastname@example.org) then in the Forward to Email Address field add the email address you want emails forwarded to. Click Add Forwarder to complete.