A catch-all email mailbox is one that captures all the messages sent to invalid addresses. For example, if your email address is info@domain.com, but somebody misspells it and sends an email to inof@domain.com, it will still be received in the catch-all mailbox that you have created. Only one mailbox per domain name can have this feature enabled and thus you’ll never miss messages because the other party has an outdated address or has made a spelling error. The disadvantage of creating a catch-all mailbox is that you may begin receiving plenty of spam, but this issue can be fixed using anti-spam filtering software. It is also important to bear in mind that a mailbox with an enabled catch-all feature cannot forward incoming email messages to a 3rd-party address.