A catch-all email mailbox is one that collects all the emails sent to non-existent addresses. For example, if your email address is info@domain.com, but someone miswrites it and sends an email message to inof@domain.com, it will still be received in the catch-all mailbox that you have created. Only one mailbox per domain name can have this feature activated and in this way you’ll never miss emails because the other party has an out-of-date email address or has made a spelling mistake. The downside of setting up a catch-all mailbox is that you may start receiving lots of junk emails, but this issue can be resolved using anti-spam filtering software. It’s also essential to know that a mailbox with an activated catch-all feature cannot forward inbound emails to a third-party mailbox.