(a) Except as provided by Subsection (b), a written letter, e-mail, or other communication, including a communication made confidential by other law, between a public official and a voting systems vendor:
(1) is not confidential;
(2) is public information for purposes of Chapter 552, Government Code; and
(3) is not subject to an exception to disclosure provided by Chapter 552, Government Code, other than Sections 552.110 and 552.1101, Government Code.
(b) A written letter, e-mail, or other communication between a public official and a voting systems vendor is excepted from disclosure under Chapter 552, Government Code, if the communication discloses information, data, or records relating to the security of elections critical infrastructure.