A catch-all e-mailbox is one that gathers all the emails sent to invalid addresses. For instance, if your address is firstname.lastname@example.org, but somebody 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. Only one single mailbox per domain name can have this feature enabled and thus you’ll never miss emails because the other party has an obsolete address or has made a typographical error. The drawback of using a catch-all mailbox is that you may start receiving a lot of unsolicited emails, but this issue can be rectified using an anti-spam filtering solution. It is also essential to remember that a mailbox with an enabled catch-all functionality cannot forward inbound email messages to a third-party email address.