A catch-all functionality that is enabled for a specific e-mailbox will allow you to receive email messages that are sent to email addresses that do not actually exist. Otherwise said, if you delete an email address and somebody still sends a message to it, or to any miswritten email address under the exact same domain, you’ll receive the message in the catch-all mailbox. Using this feature means that you will no longer miss an email for any reason whatsoever, which could be essential in case you run a company, for instance. Since you may begin receiving spam messages, you can use the catch-all option with email filters so as to receive only legitimate emails in your inbox. Only one mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.