A catch-all e-mailbox is one that captures all the messages sent to inactive addresses. For instance, if your email address is firstname.lastname@example.org, but somebody miswrites it and sends an email to email@example.com, it will still be received in the catch-all mailbox that you have set up. Just one mailbox per domain can have this feature enabled and in this way you’ll never miss emails because the other side has an obsolete address or has made a spelling mistake. The disadvantage of having a catch-all mailbox is that you may start receiving a lot of unsolicited bulk email messages, but this issue can be resolved by using an anti-spam protection solution. It’s also crucial to remember that a mailbox with an active catch-all functionality cannot redirect incoming messages to a third-party mailbox.