A catch-all e-mailbox is one that gathers all the messages sent to non-existent addresses. For instance, if your email address is firstname.lastname@example.org, but somebody miswrites it and sends an email to email@example.com, it will still be received in the catch-all mailbox that you have created. Just one mailbox per domain name can have this feature enabled and thus you’ll never miss messages because the other side has an outdated email address or has made a typo. The negative aspect of configuring a catch-all mailbox is that you may begin receiving plenty of spam messages, but this problem can be rectified using anti-spam protection software. It is also vital to know that a mailbox with an activated catch-all feature cannot forward incoming email messages to a 3rd-party address.