planck is the first commercial software suite designed and programmed to fully meet the requirements for Zero Trust Architecture as defined by NIST SP 800–207. planck establishes a peer-to-peer encrypted and sender authenticated communication between endpoints fully automatically. As a first product suite, planck has implemented a Secure Email Solution for Government and Enterprise customers. It is installed on the endpoints as Microsoft Outlook Plugin, Android client and/or IOS client. It can be rolled out gradually within an existing IT infrastructure, seamlessly connecting across any combination of on-premise and cloud, not needing a modification of any existing software application. It is an ideal addition to the Microsoft software suite around Office 365 etc. When installed, planck Security protects the entire Email infrastructure against all know e-mail attack vectors (Man in the middle, E-fail, Mailsploit, Data Theft, Ransomware injection) by establishing a secure peer-to-peer relationship between all planck email users and encrypted mail-flow in a unique way.