A catch-all e-mailbox is one that captures all the email messages sent to invalid addresses. For example, if your address is info@domain.com, but somebody miswrites it and sends an email to inof@domain.com, it will still be received in the catch-all mailbox that you have configured. Just one single mailbox per domain can have this feature activated and in this way you will never miss emails because the other side has an obsolete address or has made a spelling error. The drawback of having a catch-all mailbox is that you may start receiving lots of spam emails, but this issue can be fixed by using an anti-spam protection solution. It’s also essential to remember that a mailbox with an enabled catch-all feature cannot forward incoming messages to a 3rd-party mailbox.
