A catch-all functionality that is enabled for a certain email mailbox will allow you to receive emails that are sent to addresses that do not actually exist. To state it differently, if you remove an email address and someone still sends a message to it, or to any miswritten address under the very same domain name, you’ll receive the email in the catch-all mailbox. Using this feature implies that you will no longer miss an email for any reason, which could be essential if you run a company, for example. Since you may start receiving unsolicited bulk email messages, you can combine the catch-all functionality with email filters in order to receive only authentic email messages in your inbox. Just one single mailbox per domain can be a catch-all one and email forwarding cannot be set up for a catch-all mailbox.