A catch-all email mailbox is one that captures all the emails sent to invalid email addresses. For instance, if your email address is [email protected], but someone misspells it and sends an email message to [email protected], it will still be received in the catch-all mailbox that you have created. Just one single mailbox per domain name can have this feature enabled and in this way you’ll never miss emails because the other party has an obsolete email address or has made a mistake. The negative aspect of creating a catch-all mailbox is that you may start receiving a lot of unsolicited bulk messages, but this problem can be solved using an anti-spam filtering solution. It is also essential to bear in mind that a mailbox with an activated catch-all functionality cannot redirect incoming messages to a 3rd-party address.