Tex. Business & Commerce Code § 321.114: AUTHORITY TO BLOCK CERTAIN COMMERCIAL ELECTRONIC MAIL MESSAGES; QUALIFIED IMMUNITY.

(a) An electronic mail service provider may on its own initiative block the receipt or transmission through its service of any commercial electronic mail message that the service provider reasonably believes is or will be transmitted in violation of this chapter, if the service provider:

(1) provides a process for the prompt, good faith resolution of a dispute related to the blocking with the sender of the commercial electronic mail message; and

(2) makes contact information for the resolution of the dispute accessible to the public on the service provider's Internet website.

(b) An electronic mail service provider who complies with Subsection (a) may not be held liable for blocking the receipt or transmission through its service of any commercial electronic mail message that the service provider reasonably believes is or will be transmitted in violation of this chapter.

Added by Acts 2007, 80th Leg., R.S., Ch. 885 (H.B. 2278), Sec. 2.01, eff. April 1, 2009.