In my company it is a fireable offense to not use company email for communications. Primarily because we deal with heath info and it is a HIPAA violation to have that in an "open" email system. We can not even contact pts with their own info because their email is not secure.
Our regs only dealing with patient names and Dates of Birth, etc. Not what the US strategy is going to be IRT Putin in Crimea/Ukranine, Our strategy/tactics to deal with ISIS, What are we willing to give/won't accept in negotiations with Iran, etc. Seems pretty straight forward to me. What is curious to me is how come no one noticed/said anything to her for 4 years.