Is it illegal to send messages to intimidate people?

Legal analysis: sending threatening information does not constitute a crime. General SMS intimidation is just a violation of public security management, but it is a crime to send threatening text messages while knowing that the other party has heart disease, or blackmail the other party through text messages, and the amount of extortion reaches the standard of filing a case. Whoever publishes false explosive, toxic, radioactive, infectious disease pathogens and other information, or fabricates terrorist information such as explosion threat, biochemical threat and radiation threat, or spreads it knowing that it is terrorist information, thus seriously disrupting social order, shall be sentenced to fixed-term imprisonment of not more than five years, criminal detention or public surveillance; If serious consequences are caused, they shall be sentenced to fixed-term imprisonment of not less than five years.

Legal basis: Article 42 of the Law of People's Republic of China (PRC) on Public Security Administration Punishment commits one of the following acts, and shall be detained for not more than five days or fined not more than five hundred yuan; If the circumstances are serious, they shall be detained for more than five days and less than ten days, and may be fined up to five hundred yuan:

(1) writing threatening letters or threatening the personal safety of others by other means;

(2) publicly insulting others or fabricating facts to slander others;

(3) fabricating facts, falsely accusing and framing others, and attempting to subject others to criminal investigation or public security administration punishment;