A catch-all feature that is activated for a given email mailbox will allow you to receive email messages that are sent to email addresses that do not actually exist. To state it differently, if you deactivate an email address and somebody still sends an email message to it, or to any misspelled email address under the exact same domain name, you’ll get 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 run a company, for instance. Since you may begin receiving unsolicited emails, you can use the catch-all functionality with anti-spam filters in order to get only real email messages in your inbox. Only one single mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.