A catch-all feature that is enabled for a particular e-mailbox will permit you to receive emails that are sent to addresses that do not actually exist. Otherwise put, if you remove an email address and somebody still sends a message to it, or to any miswritten address under the same domain name, you’ll receive the message in the catch-all mailbox. Using this feature implies that you won’t miss an email for any reason whatsoever, which could be essential if you run a business, for example. Since you may start receiving spam email messages, you can combine the catch-all feature with anti-spam filters so as to get only legitimate messages in your inbox. Just one mailbox per domain can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.