A catch-all feature that is enabled for a specific email mailbox will allow you to receive emails that are sent to addresses that do not really exist. In other words, if you delete an email address and somebody still sends an email to it, or to any miswritten address under the same domain, you’ll receive the message in the catch-all mailbox. Using this functionality means that you will no longer miss an email for any reason, which could be crucial if you are running some company, for instance. Since you may start receiving unsolicited bulk messages, you can use the catch-all feature with anti-spam filters so as to get only authentic email messages in your inbox. Just one single mailbox per domain name can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.