Comment 19 in part: * When transmitting a communication that includes information relating to the representation of a client, the lawyer must take reasonable precautions to prevent the information from coming into the hands of unintended recipients. (law.stackexchange.com)
A simple statement to the effect that «the sender maintains solicitor - client privilege over the information contained in this email, and nothing shall constitute a defeat or waiver of said privilege notwithstanding inadvertent disclosure or unauthorized interception of this email by unintended recipients» should suffice. (slaw.ca)
Use a light touch on that «publish now» button, and watch for the accidental «reply all» email that sends your snarky message or racy sext to unintended recipients. (mindbodygreen.com)