An email forwarder can be deleted via the API.
- Access the server's command line as the 'root' user via SSH or "Terminal" in WHM.
- Run the following command.
uapi --username=cpusername Email delete_forwarder firstname.lastname@example.org' email@example.com'
Please note that cpusername, firstname.lastname@example.org, and email@example.com must be replaced with the cPanel username the forwarder is on, the forwarded email address, and the destination address, respectively.