In Missouri, an individual who is a party to a wire communication, or who has the consent of one of the parties to the communication, can lawfully record it or disclose its contents, unless the person is intercepting the communication for the purpose of committing a criminal or tortious act. Mo. Rev. Stat. § 542.402. Recording or disclosing the contents of a wire communication by all other persons is a felony.
Anyone whose communications have been recorded or disclosed in violation of the law can bring a civil suit to recover the greater of actual damages, $100 a day for each day of violation or $1,000, and can recover punitive damages, attorney fees and litigation costs as well. Mo. Rev. Stat. § 542.418.