1. Decreased Engagement: Too many links can confuse readers, making them less likely to click on any of them. 2. Spam Filters: Emails with excessive links are often flagged as spam, reducing deliverability. 3. Poor User Experience: A cluttered email can frustrate recipients, leading to higher unsubscribe rates. 4. Diluted Focus: Multiple links can dilute the focus of your message, weakening the impact of your primary CTA.