A catch-all email mailbox receives email messages sent to nonexistent addresses under the exact same domain name. For instance, an email message sent to the misspelled email@example.com will go to firstname.lastname@example.org in case the catch-all feature has been enabled for the latter. Thus, you can get emails from acquaintances or customers who may have sent a message to your email address with a typographical error or to an outdated one, which they may still have, but you have already deactivated. Only one single mailbox per domain 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 a certain moment you may begin receiving spam email messages in the catch-all mailbox and the forwarding limitation implies that the spam will not be received in a third-party mailbox.