Jayanna B M, and Dr. Sureshramana Mayya. “Email Marketing Strategies for Enhancing Customer Engagement: A Comprehensive Literature Review”. International Journal of Scientific Research in Science, Engineering and Technology 12, no. 1 (February 27, 2025): 371–392. Accessed August 2, 2025. https://www.ijsrset.com/index.php/home/article/view/IJSRSET25121188.