Mail forwarding basically refers to the process of re-sending an email message delivered to one email address on to a perhaps different email address. Mail forwarding can help you shift from one address to another without losing any of your mail, it can help you detach business mail from personal, it can decrease the risk of identity theft and it can even help you reduce junk mail without paying for it to be forward. Email forwarding can also redirect mail going to one address and send it to one or several further addresses.