A catch-all functionality that is activated for a certain e-mailbox will allow you to receive email messages that are sent to email addresses that do not actually exist. To put it differently, if you disable an email address and somebody still sends an email to it, or to any mistyped address under the exact same domain, you will get the email in the catch-all mailbox. Using this functionality implies that you won’t miss an email for any reason whatsoever, which could be vital in case you run a company, for instance. Since you may start receiving junk messages, you can use the catch-all feature with email filters so as to receive only authentic emails in your inbox. Only one mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.