A catch-all e-mailbox is one that gathers all the email messages sent to non-existent email addresses. For example, 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 configured. Just one mailbox per domain name can have this feature enabled and thus you’ll never miss emails because the other party has an outdated address or has made a typo. The downside of having a catch-all mailbox is that you may start receiving lots of junk messages, but this problem can be solved by using anti-spam filtering software. It’s also essential to keep in mind that a mailbox with an activated catch-all functionality cannot redirect incoming email messages to a 3rd-party email address.