A catch-all functionality that is enabled for a specific email mailbox will allow you to receive emails that are sent to addresses that do not really exist. To state it differently, if you disable an email address and somebody 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 example. Since you may start receiving unsolicited bulk email messages, you can use the catch-all functionality with anti-spam filtering software in order to receive only authentic messages in your inbox. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for a catch-all mailbox.