(a) Except as provided by Subsection (d), the registrar shall deliver a voter’s renewal certificate by mail to the mailing address on the voter’s registration application.
(b) The certificate, if mailed without an envelope, or the envelope containing the certificate must contain an instruction to the postal authorities not to forward it to any other address and to return it to the registrar if the addressee is no longer at the address to which the certificate was mailed.

(c) The registrar may not mail the certificate in the same envelope with a tax statement.
(d) The registrar shall deliver a renewal certificate issued under Section 14.001(d) with the voter’s initial certificate.