A catch-all email mailbox receives email messages sent to non-existent addresses under the same domain name. For instance, an email sent to the miswritten firstname.lastname@example.org will be delivered to email@example.com in case the catch-all feature has been enabled for the latter. In this way, you can receive emails from buddies or customers who may have sent a message to your email address with a typographical error or to an outdated one, which they may still have, but you have already disabled. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be enabled for such a mailbox. This is due to the fact that at a certain moment you may begin receiving spam email messages in the catch-all mailbox and the forwarding restriction implies that the spam will not be sent to a third-party mailbox.