If you have an email and you activate forwarding for it, all of the incoming e-mails will be sent to a third-party mailbox that you pick. The e-mail sender won't be aware of this and he will be sending the email just to the original address. Such a function is useful in case you have numerous sites, each with a different e-mail for contact, for example. By forwarding all emails to a single email address, it will be simpler for you to keep a record and not pass up a message because you have overlooked to check a specific e-mail. If you run a business, you’ll be able to employ this function to monitor the e-mails received by various departments. Another advantage is the fact that you are able to work with an official email address for a number of reasons, let’s say firstname.lastname@example.org, and you can get all emails sent to it inside your personal mailbox. It's also possible to forward e-mails from one email to a number of ones, if a number of people should be involved in the e-mail conversation.