A catch-all e-mailbox is one that collects all the messages sent to invalid addresses. For example, if your address is info@domain.com, but somebody miswrites it and sends an email message to inof@domain.com, it will still be received in the catch-all mailbox that you have created. Just one single mailbox per domain name can have this feature activated and thus you will never miss messages because the other party has an obsolete email address or has made a spelling mistake. The negative aspect of creating a catch-all mailbox is that you may start receiving a lot of unsolicited email messages, but this problem can be fixed by using anti-spam filtering software. It is also vital to bear in mind that a mailbox with an enabled catch-all feature cannot redirect inbound email messages to a third-party email address.