A catch-all e-mailbox is one that captures all the email messages sent to inactive email addresses. For example, if your address is email@example.com, but someone mistypes it and sends an email to firstname.lastname@example.org, it will still be received in the catch-all mailbox that you have created. Just one mailbox per domain name can have this feature enabled and thus you will never miss emails because the other party has an outdated address or has made a spelling error. The drawback of having a catch-all mailbox is that you may start receiving a lot of spam emails, but this issue can be rectified using anti-spam filtering software. It’s also crucial to remember that a mailbox with an active catch-all functionality cannot redirect inbound messages to a third-party mailbox.