A catch-all functionality that is enabled for a certain e-mailbox will allow you to receive emails that are sent to addresses that do not really exist. To state it differently, if you delete an email address and someone still sends an email message to it, or to any miswritten email address under the very same domain, you’ll get the email in the catch-all mailbox. Using this functionality implies that you won’t miss an email for any reason, which could be essential in case you run a company, for example. Since you may start receiving spam email messages, you can use the catch-all feature with anti-spam filters in order to get only legitimate emails in your inbox. Just one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.