22 Tex. Admin. Code § 343.22
Service of notice of hearing or investigation on the respondent/applicant shall be complete and effective if the document to be served is sent by registered or certified mail to the respondent/applicant at his or her most recent address as shown in the records of the board. Service by mail shall be complete upon deposit of the paper enclosed in a post paid properly addressed wrapper in a post office or official depository under the care and custody of the United States Postal Service.
Source Note:The provisions of this §343.22 adopted to be effective January 7, 1992, 16 TexReg 7645.