Tex. Government Code § 80.005: ELECTRONIC MAIL.

(a) Authorized methods of delivering a notice or document by electronic mail include:

(1) electronic notice sent through the electronic filing system under Section 72.031, as added by Chapter 1290 (H.B. 2302), Acts of the 83rd Legislature, Regular Session, 2013;

(2) electronic notice;

(3) electronic mail messages;

(4) e-mail; and

(5) secure electronic mail.

(b) Authorized methods of delivering a notice or document by electronic mail do not include:

(1) facsimiles;

(2) instant messaging;

(3) messages on a social network website, including Facebook and Twitter;

(4) telegraphs;

(5) telephone messages;

(6) text messages;

(7) videoconferencing;

(8) voice messages; or

(9) webcams.

Added by Acts 2015, 84th Leg., R.S., Ch. 257 (S.B. 1116), Sec. 1, eff. September 1, 2015.