The Jieyouyun anonymous letter system is fully decrypted and sold. It is similar to a letter on the Internet, and the source code is all decrypted. There are no backdoors or loopholes. It has functions: sending anonymous letters, customer registration, customer login, registration verification code, password modification, open letter, Personal text messages, templates are constructed using H5. The backend has website settings, customer addition and management, as well as SMS list payment list and other functions. This system is ready to use with third-party payment with one click. 6：
