&gt;Email is hard to secure<p>Email is trivial to secure. Just need to be able to exchange OOB one RSA key.<p>But being able to securely communicate with &quot;isis_recruiter34@jihadistan.jihad&quot; don&#x27;t give you much when LEO knows that you are communicating with each other.<p>Nowadays you need security, anonymity and usability - which are often with contradicting requirements.