A catch-all feature that is activated for a specific email mailbox will allow you to receive emails that are sent to addresses that do not actually exist. Otherwise said, if you deactivate 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 functionality means that you won’t miss an email for any reason, which could be vital if you run a business, for example. Since you may start receiving unsolicited bulk emails, you can combine the catch-all functionality with email filters so as to get only legitimate 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.