A catch-all email mailbox is one that collects all the email messages sent to inactive addresses. For instance, if your email 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 set up. Only one mailbox per domain can have this feature enabled and in this way you’ll never miss emails because the other party has an obsolete email address or has made a typo. The downside of configuring a catch-all mailbox is that you may begin receiving plenty of unsolicited messages, but this problem can be resolved using anti-spam filtering software. It is also important to bear in mind that a mailbox with an enabled catch-all functionality cannot redirect inbound email messages to a 3rd-party address.