A catch-all feature that is enabled for a particular mailbox will allow you to receive email messages 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 email address under the exact same domain name, you’ll receive the email in the catch-all mailbox. Using this functionality implies that you will no longer miss an email for any reason whatsoever, which could be essential if you run some business, for instance. Since you may begin receiving unsolicited emails, you can combine the catch-all feature with anti-spam filtering software so as to get only real email messages in your inbox. Only one mailbox per domain can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.