"Email is tough", software development is tough, IT is tough, walking and talking at the same time is tough, mailing a letter is tough.

When orgs frame problems like this, it erodes trust in the message they try to convey. Email isn't a tough problem, but its a problem nobody wants to really deal with. Email is simple - its a text based protocol, that started out open, but now you need to add security to ensure your email is delivered.