A catch-all feature that is enabled for a given 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 a message to it, or to any mistyped email address under the exact same domain, you will receive the message in the catch-all mailbox. Using this feature implies that you won’t miss an email for any reason, which could be crucial in case you run a company, for instance. Since you may begin receiving unsolicited email messages, you can combine the catch-all feature with anti-spam filters so as to receive only real emails 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.