A diluted message can be detrimental for several reasons: 1. Confusion: Subscribers may not understand the primary purpose of the email, leading to inaction. 2. Reduced Engagement: If the message is unclear, recipients are less likely to click through or take the desired action. 3. Decreased Conversion Rates: A clear and focused message is vital for driving conversions; a diluted message can significantly harm this. 4. Brand Perception: Consistently sending confusing emails can damage your brand's credibility and trustworthiness.