A catch-all feature that is activated for a particular mailbox will allow you to receive emails that are sent to email addresses that do not really exist. Otherwise stated, if you delete an email address and someone still sends a message to it, or to any miswritten address under the exact same domain name, you’ll get the message in the catch-all mailbox. Using this functionality means that you will no longer miss an email for any reason, which could be vital if you run some company, for instance. Since you may start receiving spam messages, you can combine the catch-all functionality with anti-spam filtering software so as to receive only legitimate email messages in your inbox. Only one mailbox per domain name can be a catch-all one and email forwarding cannot be enabled for a catch-all mailbox.