A catch-all feature that is activated for a certain e-mailbox will permit you to receive email messages that are sent to email addresses that do not really exist. Otherwise said, if you remove an email address and somebody still sends a message to it, or to any misspelled address under the same domain name, you’ll receive the message in the catch-all mailbox. Using this functionality implies that you will no longer miss an email for any reason, which could be essential if you are running a business, for instance. Since you may begin receiving spam messages, you can use the catch-all functionality with anti-spam filters in order to receive only legitimate messages in your inbox. Just one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.