A catch-all functionality that is activated for a specific email mailbox will permit you to receive email messages that are sent to email addresses that do not actually exist. Otherwise said, if you delete an email address and somebody still sends an email message to it, or to any mistyped address under the exact same domain, you will 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 crucial in case you are running a company, for example. Since you may begin receiving unsolicited bulk messages, you can combine the catch-all feature with email filters so as to receive only real messages in your inbox. Just one mailbox per domain name can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.