Adding email verification before form submission can increase lead capture by addressing issues such as typos in email addresses, which lead to significant revenue loss. Implementing real-time verification helps maintain a clean and accurate customer database, improves deliverability, and ensures that only valid, interested contacts are engaged. Additionally, confirmed opt-in enhances consent and sender reputation, reducing the risk of emails ending up in spam.

A campaign idea emphasizes alerting subscribers when their favorite products are low in stock instead of waiting for restock notifications. By using real stock levels and personalizing the messages based on customer behavior, this strategy has proven effective, generating significant revenue even with low conversion rates.