A catch-all e-mailbox is one that captures all the email messages sent to nonexistent email addresses. For instance, if your email address is info@domain.com, but somebody miswrites 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. Just one single mailbox per domain can have this feature activated and thus you will never miss emails because the other party has an outdated address or has made a mistake. The downside of using a catch-all mailbox is that you may start receiving a lot of unsolicited messages, but this issue can be solved using anti-spam filtering software. It is also essential to remember that a mailbox with an activated catch-all feature cannot forward inbound messages to a third-party address.