A catch-all e-mailbox is one that captures all the email messages sent to nonexistent email addresses. For example, if your email address is email@example.com, but someone miswrites it and sends a message to firstname.lastname@example.org, it will still be received in the catch-all mailbox that you have created. Only one mailbox per domain can have this feature enabled and in this way you will never miss messages because the other party has an obsolete email address or has made a spelling mistake. The disadvantage of using a catch-all mailbox is that you may begin receiving a lot of spam, but this problem can be fixed by using anti-spam filtering software. It’s also important to know that a mailbox with an enabled catch-all feature cannot redirect incoming emails to a third-party mailbox.