A catch-all e-mailbox is one that gathers all the emails sent to non-existent email addresses. For example, if your address is info@domain.com, but somebody miswrites it and sends a message to inof@domain.com, it will still be received in the catch-all mailbox that you have created. Only one single mailbox per domain can have this feature enabled and in this way you will never miss emails because the other party has an out-of-date email address or has made a typographical error. The disadvantage of having a catch-all mailbox is that you may begin receiving a lot of unsolicited email messages, but this problem can be fixed using anti-spam protection software. It is also essential to bear in mind that a mailbox with an active catch-all functionality cannot redirect inbound email messages to a 3rd-party mailbox.