A catch-all functionality that is activated for a given e-mailbox will permit you to receive emails that are sent to addresses that do not really exist. To put it differently, if you delete an email address and someone still sends an email to it, or to any misspelled email address under the same domain name, you’ll receive the message in the catch-all mailbox. Using this feature implies that you won’t miss an email for any reason whatsoever, which could be vital if you are running some company, for example. Since you may begin receiving junk messages, you can use the catch-all functionality with email filters in order to get only legitimate email messages in your inbox. Just one mailbox per domain name can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.