A catch-all feature that is activated for a certain e-mailbox will allow you to receive email messages that are sent to email addresses that do not really exist. Otherwise put, if you delete an email address and someone still sends an email to it, or to any misspelled email address under the very same domain name, you’ll receive the message in the catch-all mailbox. Using this functionality implies that you will no longer miss an email for any reason whatsoever, which could be crucial if you are running a company, for instance. Since you may start receiving junk emails, you can use the catch-all functionality with anti-spam filters so as to get only legitimate 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.