Email phishing remains a prevalent cyber threat, targeting victims to extract sensitive information or deploy malicious software. This paper explores the integration of open-source intelligence (OSINT) tools and machine learning (ML) models to enhance phishing detection across multilingual datasets. Using Nmap and theHarvester, this study extracted 17 features, including domain names, IP addresses, and open ports, to improve detection accuracy. Multilingual email datasets, including English and Arabic, were analyzed to address the limitations of ML models trained predominantly on English data. Experiments with five classification algorithms: Decision Tree, Random Forest, Support Vector Machine, XGBoost, and Multinomial Na\"ive Bayes. It revealed that Random Forest achieved the highest performance, with an accuracy of 97.37% for both English and Arabic datasets. For OSINT-enhanced datasets, the model demonstrated an improvement in accuracy compared to baseline models without OSINT features. These findings highlight the potential of combining OSINT tools with advanced ML models to detect phishing emails more effectively across diverse languages and contexts. This study contributes an approach to phishing detection by incorporating OSINT features and evaluating their impact on multilingual datasets, addressing a critical gap in cybersecurity research.

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