Email marketing continues to be one of the most profitable digital tools in 2025—with an average ROI of $42 for every $1 spent. But while it remains effective, it comes with both opportunities and challenges. The Good High ROI:  Incredibly cost-effective compared to ads. Personalisation:  Allows brands to connect with users through birthdays, product suggestions, and exclusive offers. Trackability:  Marketers can easily monitor opens, clicks, and conversions. Scalability with