Cal. Corp. Code § 21
"Electronic transmission to the corporation" means a communication (a) delivered by (1) facsimile telecommunication or electronic mail when directed to the facsimile number or electronic mail address, respectively, which the corporation has provided from time to time to shareholders or members and directors for sending communications to the corporation, (2) posting on an electronic message board or network which the corporation has designated for those communications, and which transmission shall be validly delivered upon the posting, or (3) other means of electronic communication, (b) as to which the corporation has placed in effect reasonable measures to verify that the sender is the shareholder or member (in person or by proxy) or director purporting to send the transmission, and (c) that creates a record that is capable of retention, retrieval, and review, and that may thereafter be rendered into clearly legible tangible form.
Ca. Corp. Code § 21