A catch-all feature that is activated for a specific mailbox will allow you to receive email messages that are sent to addresses that do not really exist. Otherwise stated, if you deactivate an email address and someone still sends an email to it, or to any mistyped address under the very same domain, you’ll receive the email in the catch-all mailbox. Using this feature means that you will no longer miss an email for any reason whatsoever, which could be crucial if you are running some company, for example. Since you may start receiving unsolicited bulk email messages, you can use the catch-all feature with email filters in order to receive only real email messages in your inbox. Just one single mailbox per domain can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.