A catch-all functionality that is activated for a particular email mailbox will permit you to receive emails that are sent to email addresses that do not really exist. Otherwise put, if you remove an email address and someone still sends a message to it, or to any mistyped address under the same domain name, you will receive the email in the catch-all mailbox. Using this functionality means that you won’t miss an email for any reason whatsoever, which could be crucial in case you run a business, for instance. Since you may start receiving unsolicited emails, you can combine the catch-all feature with anti-spam filters so as to receive only authentic email messages in your inbox. Only one mailbox per domain can be a catch-all one and email forwarding cannot be enabled for a catch-all mailbox.