A catch-all email mailbox receives email messages sent to invalid email addresses under the same domain. For example, an email message sent to the misspelled [email protected] will go to [email protected] if the catch-all feature has been enabled for the latter. In this way, you can receive email messages from buddies or customers who may have sent a message to your email address with a typographical error or to an out-of-date one, which they may still have, but you have already deleted. Only one single mailbox per domain name can be a catch-all one and email forwarding cannot be activated for such a mailbox. This is so because of the fact that at a certain moment you may start receiving spam email messages in the catch-all mailbox and the forwarding limitation means that the spam will not be delivered to a third-party mailbox.