A catch-all feature that is activated for a certain email mailbox will permit you to receive emails that are sent to addresses that do not actually exist. To state it differently, if you deactivate an email address and someone still sends an email message to it, or to any misspelled email address under the exact same domain name, you’ll receive the message in the catch-all mailbox. Using this feature implies that you will no longer miss an email for any reason whatsoever, which could be crucial in case you run a business, for instance. Since you may begin receiving spam emails, you can combine the catch-all feature with anti-spam filters so as to receive 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.