Click on the Forwarders link in the Mail Menu area.
Click on the 
button next to the forwarder that you want to delete. Click on the Forwarders link to return to the Forwarders window to confirm that it has been deleted.
Delete an email forwarder when you no longer need it. There is no way to modify an email forwarder - if you have made a mistake, simply delete the forwarder and start again.
To delete an email forwarder:
Click on the Forwarders link in the Mail Menu area.
Click on the button next to the forwarder that you want to delete. Click on the Forwarders link to return to the Forwarders window to confirm that it has been deleted.