A strong email encoder based on encryption and user challenge (reading a code on a picture) to protect email links. These features make the generated scripts safer to use than most email encoders based on entity code substitution. An email encoder (a.k.a. email obfuscator) is a tool that generates a substitute for mailto links (i.e. standard email links on a website) an email address on a webpage. They aim at protecting your email address from spambots, while making it accessible to users of the webpage.