A catch-all mailbox is one that collects all the emails sent to nonexistent addresses. For instance, if your address is info@domain.com, but somebody mistypes it and sends an email message to inof@domain.com, it will still be received in the catch-all mailbox that you have configured. Only one mailbox per domain name can have this feature enabled and in this way you’ll never miss messages because the other side has an obsolete address or has made a typographical error. The drawback of setting up a catch-all mailbox is that you may begin receiving plenty of junk emails, but this issue can be solved by using anti-spam filtering software. It is also essential to remember that a mailbox with an active catch-all functionality cannot forward inbound emails to a third-party mailbox.