A catch-all functionality that is activated for a given e-mailbox will allow you to receive emails that are sent to email addresses that do not actually exist. To state it differently, if you remove an email address and somebody still sends an email message to it, or to any misspelled email address under the exact same domain, you’ll receive the message in the catch-all mailbox. Using this functionality means that you won’t miss an email for any reason, which could be crucial if you run a company, for example. Since you may begin receiving junk emails, you can use the catch-all functionality with email filters so as to get only authentic emails in your inbox. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.