A catch-all feature that is activated for a specific mailbox will permit you to receive emails that are sent to addresses that do not really exist. Otherwise said, if you delete an email address and someone still sends an email message to it, or to any mistyped address under the very same domain, you’ll get the message in the catch-all mailbox. Using this functionality implies that you will no longer miss an email for any reason, which could be vital in case you run a business, for instance. Since you may begin receiving unsolicited bulk email messages, you can use the catch-all functionality with anti-spam filters in order to get only legitimate messages in your inbox. Just one mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.