A catch-all mailbox receives email messages sent to invalid email addresses under the exact same domain name. For instance, an email message sent to the miswritten firstname.lastname@example.org will go to email@example.com in case the catch-all feature has been activated for the latter. In this way, you can get messages from buddies or customers who may have sent a message to your email address with a spelling mistake or to an obsolete one, which they may still have, but you have already deleted. Just one mailbox per domain name can be a catch-all one and email forwarding cannot be set up for such a mailbox. This is due to the fact that at some point you may begin receiving spam emails in the catch-all mailbox and the forwarding limitation implies that the spam will not be sent to a third-party mailbox.