Cal. Civ. Code § 4055

If the association or a member has consented to receive information by electronic delivery, and a provision of this act requires that the information be in writing, that requirement is satisfied if the information is provided in an electronic record capable of retention by the recipient at the time of receipt. An electronic record is not capable of retention by the recipient if the sender or its information processing system inhibits the ability of the recipient to print or store the electronic record.