A catch-all e-mailbox is one that gathers all the emails sent to non-existent addresses. For instance, if your address is email@example.com, but somebody miswrites it and sends an email to firstname.lastname@example.org, it will still be received in the catch-all mailbox that you have set up. Only one single mailbox per domain can have this feature enabled and in this way you’ll never miss emails because the other side has an out-of-date email address or has made a mistake. The disadvantage of configuring a catch-all mailbox is that you may begin receiving a lot of unsolicited email messages, but this problem can be resolved using an anti-spam filtering solution. It is also crucial to know that a mailbox with an activated catch-all functionality cannot redirect incoming messages to a 3rd-party address.