An email forward is an email address which, when it receives email, automatically forwards it to a specified remote email address. Forwards do not store email, they only route email to another email address elsewhere. For example, if you setup an email forward of johndoe@domain.com forwarding to johndoe@aol.com, then any email that is received by johndoe@domain.com will be automatically forwarded to johndoe@aol.com, where the email will then be stored.