A catch-all feature that is enabled for a specific email mailbox will permit you to receive emails that are sent to addresses that do not actually exist. Otherwise said, if you deactivate an email address and someone still sends a message to it, or to any mistyped email address under the same domain name, you will receive the message 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 are running a business, for instance. Since you may begin receiving unsolicited emails, you can use the catch-all functionality with anti-spam filtering software in order to get only authentic email messages in your inbox. Only one single mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.