With an email forwarding enabled for any specific e-mail address, all of the inbound e-mail messages will be sent to a third-party e-mail address that you have chosen although the latter will not be in the list of recipients and also, the email sender will never be aware exactly where their e-mail goes. You can use such a feature in case you have multiple email addresses because it will be easier to get all incoming messages in one email address instead of logging in and out of different ones continuously or configuring a variety of mail boxes within an email client. If you have a company as well as an organization, the email forwarding is also a solution to look at all e-mails received by various departments for better coordination. You can also make use of this characteristic the other way round - an email sent to a general email address can be forwarded to multiple people.