Is it illegal to send sales messages?

Mass marketing SMS itself is not illegal, but the way of obtaining mass contacts, mass illegal and compliant content, mass junk content and so on do not meet the requirements.

Legal basis:

Article 274 of the Criminal Law of People's Republic of China (PRC), whoever extorts or extorts public or private property in a large amount or for many times shall be sentenced to fixed-term imprisonment of not more than three years, criminal detention or public surveillance, and shall also, or shall only, be fined; If the amount is huge or there are other serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than three years but not more than ten years and shall also be fined; If the amount is especially huge or there are other especially serious circumstances, he shall be sentenced to fixed-term imprisonment of not less than 10 years and fined.