Is it illegal to urge property fees by SMS?

Whether this kind of behavior is illegal depends on the situation.

If there is a written property service contract between the property company and the owner, and the payment time of the property fee is not stipulated in the contract, it is legal for the property company to urge the fee by SMS. However, if the time and method of payment have been agreed in the contract, it is illegal for the property company to send text messages for collection.

In addition, if the property company uses illegal means to urge the fees, such as threats, intimidation and other acts, then this behavior is also illegal.