A catch-all email mailbox is one that collects all the messages sent to nonexistent email addresses. For instance, 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per domain name can have this feature activated and in this way you’ll never miss emails because the other side has an out-of-date address or has made a spelling error. The downside of using a catch-all mailbox is that you may begin receiving a lot of spam messages, but this issue can be rectified using anti-spam protection software. It’s also vital to bear in mind that a mailbox with an enabled catch-all functionality cannot redirect incoming email messages to a third-party mailbox.