A catch-all functionality that is enabled for a certain e-mailbox will allow you to receive email messages that are sent to addresses that do not actually exist. Otherwise put, if you delete an email address and someone still sends a message to it, or to any miswritten address under the same domain, you’ll receive the message in the catch-all mailbox. Using this feature means that you won’t miss an email for any reason, which could be vital in case you are running a business, for instance. Since you may start receiving spam email messages, you can combine the catch-all feature with anti-spam filtering software in order to get only authentic emails 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.