nicodAImus iris is a free Chrome add-on designed to enhance email security by providing phishing risk assessments. This tool operates completely within the user's browser, evaluating emails from providers like Gmail and Proton Mail without sending any data externally. Users can simply open an email and click 'Scan' to receive a threat score ranging from 0 to 10, along with detailed insights into potential phishing indicators.

The tool checks various factors including email authentication, domain impersonation, use of URL shorteners, and suspicious language tactics. It also identifies generic greetings and potential credential requests. With a strong emphasis on privacy, nicodAImus iris ensures that all analysis is performed locally, offering a reliable layer of protection against phishing attempts while maintaining user confidentiality.