A catch-all functionality that is activated for a particular email mailbox will allow you to receive emails that are sent to email addresses that do not actually exist. To state it differently, if you disable an email address and somebody still sends a message to it, or to any mistyped email address under the very same domain, you will receive the email in the catch-all mailbox. Using this functionality implies that you won’t miss an email for any reason, which could be essential in case you run a company, for example. Since you may start receiving unsolicited email messages, you can use the catch-all feature with anti-spam filtering software so as to get only legitimate email messages in your inbox. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.