A catch-all feature that is enabled for a particular mailbox will allow you to receive emails that are sent to email addresses that do not actually exist. Otherwise put, if you remove an email address and someone still sends an email message to it, or to any misspelled address under the same domain name, you’ll receive the email in the catch-all mailbox. Using this functionality means that you will no longer miss an email for any reason whatsoever, which could be vital in case you run a company, for example. Since you may start receiving unsolicited emails, you can combine the catch-all option with email filters in order to receive only authentic email messages in your inbox. Only one mailbox per domain can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.