This case study highlights how creative agency Machine helped the Sanlam Group strengthen employee engagement and sustainability awareness through an innovative Earth Hour email campaign. The campaign featured a dark mode newsletter that symbolized environmental responsibility while reducing device energy consumption. Using bold visuals, accessible design, and practical sustainability tips, the campaign encouraged employees to adopt small, meaningful actions aligned with Sanlam’s environmental, social, and governance goals. The newsletter achieved a 32.74% open rate and a 9.01% click-through rate, demonstrating strong employee engagement with relevant, well-designed content. The campaign also earned the Best Internal Email award at the 2025 You Mailed It Email Marketing Awards, recognizing

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