A catch-all feature that is enabled for a specific mailbox will permit you to receive emails that are sent to addresses that do not really exist. Otherwise put, if you deactivate an email address and someone still sends a message to it, or to any miswritten email address under the exact same domain name, you’ll get the message in the catch-all mailbox. Using this feature implies that you won’t miss an email for any reason, which could be essential if you are running a business, for instance. Since you may begin receiving spam messages, you can use the catch-all feature with anti-spam filtering software so as to get only legitimate email messages in your inbox. Only one mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.