Tex. Est. Code § 2001.131
(a) To the extent a power of attorney expressly grants an agent authority over the content of an electronic communication sent or received by the principal and unless directed otherwise by the principal or the court, a custodian shall disclose to the agent the content of an electronic communication if the agent gives the custodian:
(b) In addition to the items required to be given to the custodian under Subsection (a), the agent shall provide the following if requested by the custodian:
Added by Acts 2017, 85th Leg., R.S., Ch. 400 (S.B. 1193), Sec. 1, eff. September 1, 2017.