A more thorough explanation:

California has several laws and regulations in place to protect consumers from unwanted and deceptive forms of advertising and communication. These laws cover various forms of electronic communication, including email, text messages, and telemarketing.

The Unsolicited Commercial Email Advertising Law of 2003 prohibits the sending of unsolicited commercial emails in California. Electronic Mail Service Providers are empowered to sue to enforce their policies prohibiting spam email. The Anti-Phishing Act of 2005 makes it unlawful for a person to use the internet or email to deceive another person into providing personally identifying information.

Example: A company sends unsolicited emails to California residents advertising their products. This is a violation of California's spam laws.

California has regulations in place for telephonic sellers, including a "Do Not Call" registry. Telephonic solicitations to California consumers must comply with the Federal Trade Commission's Telemarketing Sales Rule in order to constitute the basis for a valid contract.

Example: A telemarketer calls a California resident who is on the "Do Not Call" registry and tries to sell them a product. This is a violation of California's telemarketing laws.

California prohibits text message advertising and unsolicited advertisements sent from one fax machine to another.

Example: A company sends unsolicited text messages to California residents advertising their products. This is a violation of California's text message advertising laws.

California's prohibitions against unlawful forms of advertising, including unsolicited email advertising, are considered unlawful trade practices.

Example: A company sends unsolicited emails to California residents advertising their products. This is a violation of California's unlawful trade practices laws.

California makes it a crime to use a telephone or "electronic communication device" to annoy, threaten, or send obscene language to another.

Example: A person sends obscene text messages to a California resident. This is a violation of California's laws against sending obscene language through electronic communication devices.

California makes it a crime to use a telephone or "electronic communication device" to annoy, threaten, or send obscene language to another. It is also a crime to impersonate another through electronic means.

Example: A person creates a fake social media account using someone else's name and posts offensive content. This is a violation of California's laws against impersonating another through electronic means.