California Code, Business and Professions Code - BPC § 7856

(a) Each applicant for licensure or certification who has a valid email address shall report to the board that email address at the time of application.

(b) Each certificate or license holder who has a valid email address shall report that email address to the board at the time of renewal.

(c) Each applicant or certificate or license holder shall notify the board within 30 days of any change to their email address on file with the board.

(d) In the interest of protecting the privacy of applicants and certificate or license holders, the email address provided to the board pursuant to this chapter shall not be considered a public record and shall not be disclosed pursuant to Section 27 or pursuant to a request under the California Public Records Act (Division 10 (commencing with Section 7920.000) of Title 1 of the Government Code), unless required pursuant to a court order by a court of competent jurisdiction.