Email Privacy? Don't Count on It

Maybe not.

Inside Higher Ed has a long piece today about emails that were disclosed under a state public documents law request at the U of Illinois.* A key point is that even emails sent using non-university email services ultimately were disclosed, despite efforts of university administrators to communicate about sensitive issues on such services. Yours truly's sense is that all university-related emails at UC, regardless of how sent, could be disclosed. UCLA does have a policy designed to protect academic freedom in such matters.** But a university policy, whatever it may say, doesn't override a court decision.
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*https://www.insidehighered.com/news/2015/08/11/legal-experts-react-u-illinois-foia-controversy
**https://www.apo.ucla.edu/resources/academic-freedom