A catch-all e-mailbox is one that collects all the email messages sent to nonexistent email addresses. For instance, if your address is firstname.lastname@example.org, but someone misspells it and sends an email message to email@example.com, it will still be received in the catch-all mailbox that you have created. Only one single mailbox per domain can have this feature enabled and thus you will never miss emails because the other party has an outdated email address or has made a typographical error. The disadvantage of configuring a catch-all mailbox is that you may start receiving a lot of spam email messages, but this problem can be solved using an anti-spam protection solution. It’s also important to keep in mind that a mailbox with an activated catch-all functionality cannot redirect incoming messages to a third-party address.