Secure sign-up forms offer several benefits: 1. Enhanced User Trust: Users are more likely to subscribe if they know their data is secure. 2. Improved Deliverability: Secure forms reduce the risk of spam submissions, which can negatively impact your email deliverability. 3. Regulatory Compliance: Ensuring your forms are secure helps you stay compliant with data protection laws. 4. Reduced Risk of Data Breaches: Secure forms protect against data breaches, which can result in financial loss and damage to your brand reputation.