A catch-all email mailbox is one that collects all the messages sent to invalid addresses. For example, if your address is info@domain.com, but somebody mistypes it and sends an email message to inof@domain.com, it will still be received in the catch-all mailbox that you have configured. Just one mailbox per domain name can have this feature activated and thus you’ll never miss messages because the other side has an out-of-date email address or has made a spelling error. The disadvantage of creating a catch-all mailbox is that you may start receiving a lot of unsolicited bulk emails, but this problem can be fixed using anti-spam protection software. It’s also crucial to know that a mailbox with an activated catch-all feature cannot forward incoming emails to a 3rd-party address.