A catch-all feature that is enabled for a certain e-mailbox will allow you to receive email messages that are sent to email addresses that do not actually exist. Otherwise stated, if you deactivate an email address and someone still sends a message to it, or to any misspelled address under the same domain name, you’ll receive the email 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 a business, for example. Since you may begin receiving junk emails, you can combine the catch-all functionality with email filters so as to get only legitimate messages 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.