Horcrux Email Backup is Automatic and Hassle-Free Posted 7/03/2014 at 14:02 UTC in Mac by firstname.lastname@example.org | Permalink | Tweet Technichor introduces Horcrux email backup, a Mac app that ensures that email users automatically keep their data rather than unknowingly surrendering it to third party services. Horcrux takes daily snapshots of email accounts. The app is continuous and in real time, so that as soon as a new email is added it will be transferred. It gives users the option to change email providers without losing prior data. Horcrux will also migrate the emails to another email service.