A catch-all functionality that is enabled for a specific email mailbox will permit you to receive email messages that are sent to email addresses that do not really exist. To state it differently, if you deactivate an email address and somebody still sends an email message to it, or to any misspelled address under the same domain name, you’ll get the message in the catch-all mailbox. Using this functionality means that you won’t miss an email for any reason whatsoever, which could be vital if you are running a business, for instance. Since you may begin receiving junk messages, you can combine the catch-all option with anti-spam filtering software in order to receive only authentic emails in your inbox. Just one mailbox per domain can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.