A catch-all feature that is enabled for a specific email mailbox will allow you to receive email messages that are sent to addresses that do not actually exist. To put it differently, if you delete an email address and somebody still sends an email to it, or to any misspelled email address under the exact same domain, you’ll get the email in the catch-all mailbox. Using this feature means that you won’t miss an email for any reason whatsoever, which could be vital if you are running some company, for instance. Since you may start receiving unsolicited email messages, you can combine the catch-all feature with email filters so as to get only real emails in your inbox. Just one mailbox per domain can be a catch-all one and email forwarding cannot be enabled for a catch-all mailbox.