(a) The commissioner shall immediately send by registered or certified mail, return receipt requested, one copy of process served on the commissioner under Section 804.201 to:
(1) the defendant at the address supplied in the process as provided by Sections 804.201(a)(1) through (4); or
(2) if Section 804.201(a)(5) applies, the home office or principal business office of the authorized company, as indicated in the department records.
(b) The commissioner shall send by registered or certified mail, return receipt requested, copies of process served under Section 804.108 to the last known address of the person.
(c) On receiving the return receipt for certified or registered mail, the commissioner shall issue a certificate showing the service and proof of delivery by a return receipt to the plaintiff and clerk of the court or agency where the proceeding is pending.
(d) The commissioner shall provide on request the certificate described by Subsection (c). The commissioner may charge a fee not to exceed $10 for the certificate.