A catch-all feature that is enabled for a certain e-mailbox will permit you to receive email messages that are sent to email addresses that do not actually exist. To put it differently, if you deactivate an email address and somebody still sends an email message to it, or to any miswritten address under the same domain name, you will get 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 run a business, for example. Since you may begin receiving unsolicited messages, you can combine the catch-all feature with email filters so as to receive only real email messages in your inbox. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.