A catch-all e-mailbox is one that collects all the messages sent to inactive addresses. For example, if your address is firstname.lastname@example.org, but someone miswrites it and sends an email to email@example.com, it will still be received in the catch-all mailbox that you have configured. Only one single mailbox per domain name can have this feature enabled and in this way you’ll never miss messages because the other side has an outdated email address or has made a typo. The disadvantage of having a catch-all mailbox is that you may begin receiving lots of junk email messages, but this issue can be resolved using anti-spam filtering software. It is also crucial to keep in mind that a mailbox with an activated catch-all feature cannot redirect inbound emails to a 3rd-party address.