Mail forwarding is a free service, and enables you to forward mail from your NapaNet email account to any other email address you may have.
If you are going on Vacation for a while, this free service is available to reply to email that is sent to you while you're away. It will automatically reply to your email using whatever message you specify.
The vacation autoresponder and mail forwarding functions are mutually exclusive. Turning on mail forwarding will automatically turn off the vacation sutoresponder and vice versa.