There should be an option to filter body with no content. Each of the spams that make it through the inbox have random letters as sender, each one of them. They change the subject in each one. They start or contain symbols that cannot be filtered. The only thing I find is that all of them have no content, only an image and there is no way to filter it unless Yahoo improves the filtering system. The sooner the better. These spams are extremely annoying, from 2 to 8 per day, is beyond understanding.