A catch-all functionality that is activated for a particular email mailbox will allow you to receive email messages that are sent to email addresses that do not actually exist. To put it differently, if you deactivate an email address and somebody still sends an email message to it, or to any misspelled address under the exact same domain, you will receive the message in the catch-all mailbox. Using this feature means that you won’t miss an email for any reason, which could be vital in case you are running a company, for example. Since you may begin receiving junk messages, you can combine the catch-all functionality with email filters in order to get only legitimate messages in your inbox. Only one mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.