Mo. Rev. Stat. § 52.230

52.230. Statements and receipts mailed to taxpayers, when, contents — electronic transmission (counties of the second, third, fourth and first classification). — 1. Each year the collectors of revenue in all counties of the first class not having a charter form of government, and in all second, third and fourth class counties of the state, not under township organization, shall mail to all resident taxpayers, at least thirty days prior to delinquent date, a statement of all real and tangible personal property taxes due and assessed on the current tax books in the name of the taxpayers. Such statement shall also include the amount of real and tangible personal property taxes delinquent at the time of the mailing of the statement, including any interest and penalties associated with the delinquent taxes. Such statement shall declare upon its face, or by an attachment thereto, that they are delinquent at the time such statement is mailed for an amount of real or tangible personal property taxes, or both. A collector of revenue or other collection authority charged with the duty of tax or license collection may refuse to accept payment not accompanied by such statement. Refusal by the collector of revenue to accept payment not accompanied by such statement shall not relieve or delay the levy of interest and penalty on any overdue unpaid tax or license. Collectors shall also mail tax receipts for all the taxes received by mail.

2. The collectors of revenue may electronically transmit the statement required under subsection 1 of this section to the electronic address provided and authorized by the taxpayer to the collector of revenue. Any electronic address provided by a taxpayer to the collector of revenue for purposes of this subsection shall be a closed record under chapter 610 .

(L. 1949 p. 541 § 1, L. 1949 p. 542 § 1, A. 1949 H.B. 2166, L. 1951 p. 403 §§ 52.361, 52.362, A.L. 1959 S.B. 62, A.L. 1973 H.B. 644, A.L. 1996 S.B. 914, A.L. 1997 S.B. 11, A.L. 2006 S.B. 932, A.L. 2010 H.B. 1316, A.L. 2013 H.B. 128)