A catch-all functionality that is activated for a specific mailbox will permit you to receive email messages that are sent to email addresses that do not really exist. Otherwise said, if you remove an email address and somebody still sends an email to it, or to any misspelled email address under the exact same domain name, you will get the email in the catch-all mailbox. Using this feature implies that you won’t miss an email for any reason whatsoever, which could be crucial if you are running a business, for instance. Since you may start receiving unsolicited bulk emails, you can combine the catch-all feature with anti-spam filtering software in order to get only authentic email messages in your inbox. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be enabled for a catch-all mailbox.