A catch-all feature that is enabled for a certain email mailbox will allow you to receive email messages that are sent to email addresses that do not really exist. To put it differently, if you remove an email address and someone still sends an email to it, or to any mistyped address under the same domain name, you’ll get 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 run a company, for example. Since you may begin receiving junk messages, you can use the catch-all option with anti-spam filtering software so as to get only authentic emails in your inbox. Just one single mailbox per domain can be a catch-all one and email forwarding cannot be enabled for a catch-all mailbox.