California Code, Government Code - GOV § 7928.300

(1) To an agent, or a family member of the individual to whom the information pertains.

(2) To an officer or employee of another public agency when necessary for the performance of its official duties.

(3) To an employee organization pursuant to regulations and decisions of the Public Employment Relations Board, except that the home addresses and any phone numbers on file with the employer of employees performing law enforcement-related functions, and the birthdate of any employee, shall not be disclosed.

(4) To an agent or employee of a health benefit plan providing health services or administering claims for health services to public agencies and their enrolled dependents, for the purpose of providing the health services or administering claims for employees and their enrolled dependents.

(b)(1) Unless used by the employee to conduct public business, or necessary to identify a person in an otherwise disclosable communication, the personal email addresses of all employees of a public agency shall not be deemed to be public records and shall not be open to public inspection, except that disclosure of that information may be made as specified in paragraphs (1) to (4), inclusive, of subdivision (a).

(2) This subdivision shall not be construed to limit the public's right to access the content of an employee's personal email that is used to conduct public business, as decided by the Supreme Court in City of San Jose v. Superior Court (2017) 2 Cal.5th 608.