A catch-all e-mailbox is one that gathers all the email messages sent to invalid email addresses. For example, if your email address is email@example.com, but somebody mistypes it and sends an email to firstname.lastname@example.org, 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 thus you’ll never miss emails because the other side has an obsolete email address or has made a mistake. The disadvantage of using a catch-all mailbox is that you may begin receiving a lot of junk email messages, but this issue can be resolved using anti-spam filtering software. It is also crucial to keep in mind that a mailbox with an active catch-all feature cannot forward inbound email messages to a third-party email address.