A catch-all functionality that is enabled for a certain e-mailbox will allow you to receive email messages that are sent to addresses that do not really exist. Otherwise said, if you deactivate an email address and someone still sends a message to it, or to any mistyped address under the exact same domain name, you will get the email in the catch-all mailbox. Using this functionality means that you won’t miss an email for any reason, which could be vital if you are running a company, for instance. Since you may start receiving unsolicited bulk emails, you can use the catch-all option with anti-spam filters in order to receive only authentic emails in your inbox. Just one single mailbox per domain name can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.